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1. 发明授权

US3637311A Optical dichroism measuring apparatus and method 失效
标题翻译：光学二色测量装置和方法
公开(公告)号：US3637311A
公开(公告)日：1972-01-25
申请号：US3637311D
申请日：1967-10-30
申请人： DURRUM INSTR
发明人： TIPOTSCH DONALD G
IPC分类号： G01N21/19 , G01N21/40
CPC分类号： G01N21/19
摘要： An apparatus and method in which a periodic right and left circularly polarized light beam is projected through a sample in which there are included means for occluding the intensity of said right and left circularly polarized light to form a transmitted light beam having right and left circularly polarized light of equal intensity, and means for indicating the amount of occlusion.
摘要翻译：一种周期性的左右圆偏振光束通过样本投影的装置和方法，其中包括用于阻挡所述右和左圆偏振光的强度的装置，以形成具有右和向左圆偏振的透射光束具有相同强度的光，以及用于指示遮挡量的装置。

2. 发明专利

JPS6256464B2 失效
公开(公告)号：JPS6256464B2
公开(公告)日：1987-11-26
申请号：JP5256277
申请日：1977-05-07
申请人： DURRUM INSTR
发明人： UIRIAMU YAKOBU DOREIYAA
IPC分类号： G01N33/68 , B01J10/00 , B01J19/00 , C07C67/00 , C07C227/00 , C07C227/28 , C07C313/00 , C07C319/20 , C07C323/58 , C07K1/00 , C40B40/10 , C40B50/14 , C40B60/14 , G01N33/483

3. 发明授权

US3859859A Spring syringe drive apparatus 失效
标题翻译： SPRING SYRINGE DRIVE APPARATUS
公开(公告)号：US3859859A
公开(公告)日：1975-01-14
申请号：US36596973
申请日：1973-06-01
申请人： DURRUM INSTR
发明人： STICKNEY MICHAEL E
IPC分类号： B01L3/02 , G05G17/00 , A61M5/20 , G01F11/06
CPC分类号： B01L3/0234 , Y10T74/11
摘要： A spring drive apparatus including a drive rod, a spring engaging said drive rod to urge the rod for movement in a predetermined direction, means for compressing said spring and locking it in a compressed condition while the rod remains stationary, means for controlling distance of movement of said rod, and means for releasing the spring for driving the rod, whereby said rod is advanced serially through distances equal to the controlled distance by alternately actuating the means for compressing and releasing the spring.
摘要翻译：一种弹簧驱动装置，包括驱动杆，与所述驱动杆接合以促使杆沿预定方向运动的弹簧，用于压缩所述弹簧并在杆保持静止时将其锁定在压缩状态的装置，用于控制运动距离的装置的所述杆，以及用于释放用于驱动杆的弹簧的装置，由此所述杆通过交替地致动用于压缩和释放弹簧的装置而连续地前进等于受控距离的距离。

4. 发明授权

US3602597A Differential circular dichroism measuring apparatus 失效
标题翻译：差分二次测量仪器
公开(公告)号：US3602597A
公开(公告)日：1971-08-31
申请号：US3602597D
申请日：1969-09-17
申请人： DURRUM INSTR
发明人： SPROUL DONALD P
IPC分类号： G01N21/19 , G01N21/40
CPC分类号： G01N21/19
摘要： A circular dichroism (CD) and/or optical rotatory dispersion (ORD) measuring apparatus having half-wave retardation means and a reference cell inserted in the light beam to convert the apparatus to measure differential CD and/or ORD is disclosed.

5. 发明授权

US3512001A System for measuring differential absorption in which the transducer circuit gain is varied 失效
标题翻译：用于测量传感器电路增益变化的差分吸收系统
公开(公告)号：US3512001A
公开(公告)日：1970-05-12
申请号：US3512001D
申请日：1966-09-22
申请人： DURRUM INSTR
发明人： SPROUL DONALD PATRICK
IPC分类号： G01J3/42 , G01N21/19 , G01N21/22 , G01N21/02 , G01N21/24
CPC分类号： G01J3/42 , G01N21/19

6. 发明授权

US3202325A Fraction collector 失效
标题翻译：馏分收集器
公开(公告)号：US3202325A
公开(公告)日：1965-08-24
申请号：US26960463
申请日：1963-04-01
申请人： DURRUM INSTR
发明人： DURRUM EMMETT L
IPC分类号： G01N1/18
CPC分类号： G01N1/18

7. 发明专利

JPS52136101A METHOD OF SUCCESSIVE DECOMPOSITION OF PEPTIDE OR PROTEINS 失效
公开(公告)号：JPS52136101A
公开(公告)日：1977-11-14
申请号：JP5256277
申请日：1977-05-07
申请人： DURRUM INSTR
发明人： UIRIAMU YAKOBU DOREIYAA
IPC分类号： G01N33/68 , B01J10/00 , B01J19/00 , C07C67/00 , C07C227/00 , C07C227/28 , C07C313/00 , C07C319/20 , C07C323/58 , C07K1/00 , C40B40/10 , C40B50/14 , C40B60/14 , G01N33/483

8. 发明专利

JPS524894A ASSEMBLY IN CONSTANT FLUID SPEED FOR DETECTION OF AMINO ACID 失效
公开(公告)号：JPS524894A
公开(公告)日：1977-01-14
申请号：JP312476
申请日：1976-01-13
申请人： DURRUM INSTR
发明人： PIITAA EDOGAA HEA
IPC分类号： G01N21/64 , G01N30/84 , G01N33/68
摘要： A method and apparatus for the detection of primary and secondary amino acids in a known sequence in a liquid sample stream. The amino acids are rendered detectable by reaction with a fluorometric reagent such as fluorescamine. A conversion reagent, e.g., N-chlorosuccinimide, is added to the sample streams only when secondary amine is present. Baseline shift in the fluorometric detection is avoided by adding an inert liquid diluent stream to the sample stream at a predetermined flow rate at all times except when the conversion reagent is added. By maintaining the diluent and N-chlorosuccinimide streams under constant pressure and synchronously switching between streams to coincide with the presence of a primary or secondary amino acid, liquid flow through the fluorometer is maintained at a substantially constant rate throughout the run.

9. 发明专利

GB1512228A CONSTANT FLOW SYSTEM FOR DETECTION OF AMINO ACIDS 未知
公开(公告)号：GB1512228A
公开(公告)日：1978-05-24
申请号：GB5270775
申请日：1975-12-23
申请人： DURRUM INSTR
IPC分类号： G01N21/64 , G01N30/84 , G01N33/68 , G01N21/52 , B01D15/08 , G01N21/26
摘要： 1512228 Chromatography DURRUM INSTRUMENT CORP 23 Dec 1975 [25 June 1975] 52707/75 Heading B1H [Also in Division G1] In a continuous method for the detection of at least one primary amino acid and secondary amino acid accurring in a known sequence in a liquid sample stream moving in a flow path at a substantially constant flow rate to a detection zone, e.g. the element stream from a chromatographic column flowing to a fluormeter and wherein the detectability of the primary amino acid is impeded by reaction with an oxidising reagent while the dectability of the secondary amino acid is improved by reaction with said oxidising reagent, the steps of (a) adding an inert liquid diluent stream at a predetermined flow rate to the sample stream in the flow path when the sample stream includes a primary amino acid only at a selected location in the flow path, (b) adding stream containing said oxidising reagent at essentially by the same flow rate as the liquid diluent stream of step (a) at the selected location when the sample stream at the location includes a secondary amino acid only and simultaneously discontinuing the flow of the liquid diluent stream at that moment, whereby liquid flows through the detection zone at a substantially constant flow rate during detection of the primary and secondary amino acids, and (c) continuously adding a detection reagent to the sample stream flowing in the flow path downstream from the selected location, the said detection reagent being capable of quantitatively reacting with the primary and secondary amino acids in the stream to render the primary and secondary amino acids detectable. The detection reagent is preferably a fluorogenic reagent such as fluorescamine or o-phthalaldehyde, the oxidising agent may be N-chlorosuccinimide and the detection zone may be a fluorometer.

10. 发明专利

CA846498A DIFFERENTIAL ABSORPTION MEASURING SYSTEM 未知
公开(公告)号：CA846498A
公开(公告)日：1970-07-14
申请号：CA846498D
申请人： DURRUM INSTR
发明人： SPROUL DONALD P

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