专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明专利

JP2000261439A METHOD AND SYSTEM MATERIAL FOR PREVENTING REDUCTION IN RADIO LAN COMMUNICATION RATE 失效
公开(公告)号：JP2000261439A
公开(公告)日：2000-09-22
申请号：JP6300499
申请日：1999-03-10
申请人： NIPPON PAINT CO LTD
发明人： MIYASOI SEIGO , KANDA KAZUNORI , MORIMOTO MASATO , TAKASO TOSHIKI , ODA MITSUYUKI
IPC分类号： H04L12/28
摘要： PROBLEM TO BE SOLVED: To prevent the communication rate of a radio LAN from being decelerated by interrupting communication between plural radio LAN access points by using at least one means selected from a group consisting of a radio wave controlling partition, a directivity controlling means, and so on. SOLUTION: In the case of setting up plural radio LAN access points, it is preferable to separate respective access points. Since the preferable setting is not always attained due to a using environment, communication between plural radio LAN access points is interrupted by using at least one means selected from a group consisting of a communication device radio wave attenuating means (A) to be attached to a radio LAN communication device, a radio wave controlling partition (B) and a means (C) for controlling directivity of a radio LAN access point communication device. Consequently the communication cells of a radio LAN can be simply divided and the communication speed of the radio LAN can be prevented from being decelerated.

2. 发明专利

JPH11195890A NEW CONDUCTIVE BIPOLAR ELEMENT PATTERN WHICH REFLECTS ELECTROMAGNETIC WAVE OF FREQUENCY IN SPECIFIC RANGE, AND FREQUENCY SELECTIVE ELECTROMAGNETIC WAVE SHIELDING MATERIAL COMPRISING IT 失效
公开(公告)号：JPH11195890A
公开(公告)日：1999-07-21
申请号：JP50598
申请日：1998-01-05
申请人： NIPPON PAINT CO LTD
发明人： TAKASO TOSHIKI , MATSUO SEIICHI , ODA MITSUYUKI
IPC分类号： H05K9/00
摘要： PROBLEM TO BE SOLVED: To provide a conductive pattern wherein communication wave is selectively reflected, sufficient electromagnetic wave shielding is provided, and excellent perspective characteristic is provided, by insulating each conductive bipolar element and allowing adjoining conductive bipolar elements to keep each other as close as possible. SOLUTION: The dimension of a conductive bipolar element is decided depending on a frequency which is to be shielded. Adjoining conductive bipolar elements are preferred to close each other. This enhances shielding power against electromagnetic wave. Further, adjoining conductive bipolar elements are preferred to keep each other as close as possible. However, the conductive bipolar elements should not contact each other. In short, the conductive bipolar elements should be electrically insulated from each other. If the conductive bipolar elements are electrically conducted each other, the resonance characteristics of conductive bipolar element pattern changes, thereby the frequency region of electromagnetic wave which can be reflected changes.

3. 发明专利

JPH10341093A ELECTROMAGNETIC WAVE SHIELDING FILM 失效
公开(公告)号：JPH10341093A
公开(公告)日：1998-12-22
申请号：JP15210197
申请日：1997-06-10
申请人： MEIWA PACKS KK , NIPPON PAINT CO LTD
发明人： ITO YOSHIBUMI , NAKANO KATSUMI , MATSUO SEIICHI , TAKASO TOSHIKI
IPC分类号： B32B7/02 , B32B15/08 , B32B15/09 , B32B15/20 , B32B33/00 , H05K9/00
摘要： PROBLEM TO BE SOLVED: To provide an electromagnetic wave shielding film which has good electromagnetic wave shielding performance, good transparency by eliminating the brightness of a metallic conductive layer, superior design, and is advantageous in industrial production and can ensure good electromagnetic wave shielding performance, even if the metallic conductive layer has defects. SOLUTION: This is an electromagnetic wave shielding film having a structure of a transparent base film 1, metallic conductive layers 2 having two- dimentional patterns provided on the base film 1, and print layers 3 having two-dimentional pattern provided on the metallic conductive layers 2. The patterns on the layers 2, 3 are substantially the same in shape and position, hence the layer 2 is substantially hidden by the layer 3 when viewed from either side of the film.

4. 发明专利

JP2001352191A ELECTROMAGNETIC WAVE ABSORBER 失效
公开(公告)号：JP2001352191A
公开(公告)日：2001-12-21
申请号：JP2000167092
申请日：2000-06-05
申请人： NIPPON PAINT CO LTD
发明人： YAMAMOTO MASAHARU , TAKASO TOSHIKI
IPC分类号： H05K9/00
摘要： PROBLEM TO BE SOLVED: To provide an electromagnetic wave absorber which is lighter and thinner than the conventional electromagnetic wave absorber and capable of enough absorbing even obliquely incoming electromagnetic waves. SOLUTION: The absorber is composed of a conductive loop pattern of a plurality of conductive loops regularly disposed on one or a plurality of mutually parallel planes, an intermediate layer and a conductive layer. Further, the absorber has a thickness over 0.027 times as much as the wavelength of a wave to be absorbed. The conductive loop is made of a conductive material (aluminum or ITO) having a resistivity of 0.01-100 Ω/square and has an outside-to-outside spacing of 2 mm or more between adjacent loops and a rectangular shape.

5. 发明专利

JPH11204984A FREQUENCY SELECTIVE ELECTROMAGNETIC WAVE SHIELD MATERIAL 失效
公开(公告)号：JPH11204984A
公开(公告)日：1999-07-30
申请号：JP557998
申请日：1998-01-14
申请人： NIPPON PAINT CO LTD
发明人： TAKASO TOSHIKI , MATSUO SEIICHI , ODA MITSUYUKI
IPC分类号： H05B6/76 , H05K9/00
摘要： PROBLEM TO BE SOLVED: To shield a plurality of electromagnetic waves simultaneously without requiring any grounding by specifying the thickness of a spacer for a plurality of resonant frequency selective electromagnetic wave shielding planar bodies and the electric length of an electromagnetic wave having a frequency to be shielded. SOLUTION: When a resonant frequency selective electromagnetic wave shielding planar body having a capacitor and an inductor is directed vertically to the advancing direction of an electromagnetic wave, a unit 102, 102', 112, 112' of a conductive pattern formed on the surface of an insulating basic material 101, 111 becomes an inductor and a broken conductivity part 103, 113 becomes a capacitor. Resonance frequency preferably matches the frequency of an electromagnetic wave to be shielded. The conductive pattern 102, 102', 112, 112' has a profile, dimensions and a line width dependent on the frequency to be shielded, a desired shielding power, and the like, and a spacer for keeping a thickness of 1/160 of the electric length of lowest frequency electromagnetic wave or above with accuracy of ±10% is preferably employed.

6. 发明专利

JPH1131896A PORTABLE TYPE TELEPHONE ELECTROMAGNETIC WAVE SHIELD BAG 失效
公开(公告)号：JPH1131896A
公开(公告)日：1999-02-02
申请号：JP18674497
申请日：1997-07-11
申请人： MEIWA PACKS KK , NIPPON PAINT CO LTD
发明人： ITO YOSHIBUMI , NAKANO KATSUMI , MATSUO SEIICHI , TAKASO TOSHIKI
IPC分类号： B65D81/30 , H05K9/00
摘要： PROBLEM TO BE SOLVED: To provide a portable type telephone electromagnetic wave shield bag capable of preventing malfunctions of a peripheral device or adverse influences on a principal being a user as transmission and reception; and communication are enabled while it has a favorable electromagnetic wave shielding property. SOLUTION: This bag is a bag which enables transmission and reception; and communication and also suppresses a leakage electromagnetic wave amount in a state that a portable type telephone is received in the bag. A face A of the bag (a face on a side of a button operation part of a telephone) is constructed of a sheet material having inside fluoroscopic property and having a soft electromagnetic wave shielding property being 5 to 35dB by a KEC method, and specifically a sheet material containing layer structure unit of (1)/(2) or (2)/(1)/(2) in which a metal conductive layer (2) composed of an aluminum vacuum vapor-deposited layer of a two-dimensional line pattern is provided on at least one face of a transparent basic material film (1). A face (B) of the bag is constructed of a sheet material having electromagnetic wave shield property of 5dB or more by the KEC method.

7. 发明专利

JP2001177293A FREQUENCY SELECTIVE ELECTROMAGNETIC WAVE SHIELDING MATERIAL 失效
公开(公告)号：JP2001177293A
公开(公告)日：2001-06-29
申请号：JP35747599
申请日：1999-12-16
申请人： NIPPON PAINT CO LTD
发明人： TAKASO TOSHIKI , MATSUO SEIICHI , ODA MITSUYUKI
IPC分类号： H05K9/00 , H01Q17/00
摘要： PROBLEM TO BE SOLVED: To provide a frequency selective electromagnetic wave shielding material for making generation of TV ghosts less likely by installing an electromagnetic wave shielding material. SOLUTION: This frequency selective electromagnetic wave shielding material comprises a conductive loop pattern, having a plurality of conductive loops regularly disposed on one flat surface or a plurality of flat surfaces parallel to each other. In this case, plurality of conductive loop blocks made of at least four conductive loops are formed, and the loops regularly disposed in the conductive loop block are formed, so that the outer peripheries of the insulating and adjacent conductive loops are approached as neat as possible. The capacity of a capacitor formed between the individual loop patterns for constituting the loop blocks is larger than that of the capacity formed between the blocks.

8. 发明专利

JPH11330764A INDOOR RADIO COMMUNICATION INTERFERENCE ELECTROMAGNETIC WAVES PREVENTION METHOD 失效
公开(公告)号：JPH11330764A
公开(公告)日：1999-11-30
申请号：JP13207898
申请日：1998-05-14
申请人： NIPPON PAINT CO LTD
发明人： TAKASO TOSHIKI , KANDA KAZUNORI
IPC分类号： H05B6/76 , F24C7/02 , H05K9/00
摘要： PROBLEM TO BE SOLVED: To easily prevent radio communication interference waves due to the interference electromagnetic waves by providing the covering of an electromagnetic wave shielding material at the electromagnetic wave leakage opening part of electrical equipment for leaking electromagnetic waves and inserting an electromagnetic wave absorption material into an electromagnetic wave leakage gap. SOLUTION: With the amount of leaked electromagnetic waves from a microwave oven, a small amount of electromagnetic waves leaks from an opening or a gap. Leaked parts include a window 2 for checking the inside being provided at a door body 1 for loading in/out an object to be heated, the gap between the edge of the door body 1 and an equipment body, and a reverse side ventilation port 4 of the microwave oven body. The covering of the electromagnetic wave shielding material is provided around the opening where electromagnetic waves leak. Electromagnetic wave shielding performance is fully exhibited by providing a conductive layer or a conductive material which is arranged in a circuit shape for generating an LC-resonance phenomenon, and electromagnetic waves at a specific frequency band are resonated, even if the phenomenon is utilized for shielding. A fiber-shaped electromagnetic wave shielding material requiring ventilation is used for the ventilation port 4. A leakage prevention means is provided at both the window part of a front door and the gap between the door body and the equipment body for 6-7 dB leakage intensity.

9. 发明专利

JPH1065379A ELECTROMAGNETIC WAVE REFLECTION PANEL FOR PORTABLE COMMUNICATION EQUIPMENT 失效
公开(公告)号：JPH1065379A
公开(公告)日：1998-03-06
申请号：JP23983696
申请日：1996-08-21
申请人： NIPPON PAINT CO LTD
发明人： KANDA KAZUNORI , TAKASO TOSHIKI
IPC分类号： H05K9/00 , H01Q1/24 , H01Q19/13 , H04M1/02 , H04W88/00 , H04Q7/32
摘要： PROBLEM TO BE SOLVED: To effectively prevent the emission of an electromagnetic wave generated by the portable communication equipment to a head of a human body by providing an electromagnetic reflection panel for the portable communication equipment between an antenna and a human body in order to protect the human body from an electromagnetic waves generated from the antenna of the portable communication equipment. SOLUTION: An electromagnetic wave reflection panel 1 for a portable communication equipment contains a speaker 13 or the like of the portable communication equipment to cover it, in the case other than the state when the portable communication equipment is in use, so as to attain a structure by which the portable communication equipment cannot be used. Furthermore, when the portable communication equipment is in use, an electromagnetic wave reflection panel 1 for the potable communication equipment is placed between a head of the human body and an antenna 11 of the portable communication equipment by jumping the panel 1 up upward around a hinge. Thus, secondary radiation of the electromagnetic wave from the electromagnetic wave reflection panel 1 for the portable communication equipment is reduced, and especially the radiation of the electromagnetic waves to the head of the human body is effectively prevented.

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式