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    • 2. 发明专利
    • Titanium dioxide microparticle and method for producing the same
    • 二氧化钛微球及其制造方法
    • JP2005047787A
    • 2005-02-24
    • JP2003301138
    • 2003-08-26
    • Toshiba Ceramics Co Ltd東芝セラミックス株式会社
    • ZHOU ZHONGHUATOKUTAKE FUMIOSHIMAI SHUNZOKONDO HIROYUKIITO YUGO
    • C01G23/07B01J27/24B01J35/02
    • PROBLEM TO BE SOLVED: To provide titanium dioxide microparticles which exhibit higher photocatalysis than the conventional upon being irradiated with visible rays and develop photocatalysis excellent in stability and persistence and to provide a method for producing the same.
      SOLUTION: The titanium microparticles are obtained by heat-treating titanium dioxide microparticles as a raw material at 500 to 620°C in a reducing gas atmosphere containing a nitrogen-containing gas and are microparticles having a titanium dioxide component content of at least 80 wt.%, and doped with at least two types of anions containing at least 50 ppm of each of at least nitrogen and carbon, and exhibiting isopropanol oxidation activity upon being irradiated with visible rays at a wavelength of 400 to 600 nm.
      COPYRIGHT: (C)2005,JPO&NCIPI
    • 解决的问题:为了提供在照射可见光线时比常规光催化更高的二氧化钛微粒,并且开发稳定性和持久性优异的光催化剂,并提供其制备方法。 解决方案:钛微粒通过在含有含氮气体的还原气体气氛中在500-620℃下热处理二氧化钛微粒作为原料而获得,并且是二氧化钛组分含量至少为 80重量%,并且掺杂有至少两种至少含有至少50ppm至少氮和碳的阴离子的阴离子,并且在以400-600nm波长的可见光照射下显示异丙醇氧化活性。 版权所有(C)2005,JPO&NCIPI
    • 5. 发明专利
    • PRODUCTION OF QUARTZ RAW MATERIAL POWDER
    • JPH1143321A
    • 1999-02-16
    • JP21393997
    • 1997-07-25
    • TOSHIBA CERAMICS CO
    • FUJIWARA MARIKOTOKUTAKE FUMIO
    • C03B20/00C01B33/18C03B19/10C03C3/06
    • PROBLEM TO BE SOLVED: To produce a highly pure raw material powder having an iron content not larger than a specific value by calcining a quartz raw material powder and carrying out a purifying treatment of the calcined quartz raw material powder with a mixed liquid of hydrofluoric acid with sulfuric acid. SOLUTION: A quartz raw powder is calcined and thereafter subjected to a purifying treatment with a mixed liquid of 2-5% hydrofluoric acid with 5-20% sulfuric acid to provide the objective quartz raw material powder with =40 deg.C, more preferably >=60 deg.C. The purifying treatment is preferably carried out while stirring the mixture. Although the purifying treatment time is not indiscriminately defined because of dependence on the concentration of the mixed liquid, and the treatment temperature, but when using the condition of 2% hydrofluoric acid, 10% sulfonic acid and 80 deg.C treatment temperature, 1-2 hr is exemplified. For example, a silica rock is used as the raw material, and pulverized by a conventional method. The pulverized raw material silica rock is floated and thereafter calcined. The calcined powder is subjected to the purifying treatment with the mixed liquid of the hydrofluoric acid with the sulfuric acid in the before concentration. Thereafter, the treated powder is washed with water and dried to provide the highly pure quartz raw material powder.
    • 6. 发明专利
    • Photocatalyst water purification apparatus
    • 光催化水净化装置
    • JP2007160273A
    • 2007-06-28
    • JP2005363330
    • 2005-12-16
    • Toshiba Ceramics Co Ltd東芝セラミックス株式会社
    • ISHII TATSUYATOKUTAKE FUMIOSHU CHUKA
    • C02F1/32B01J35/02C02F1/72
    • PROBLEM TO BE SOLVED: To provide an inexpensive photocatalyst water purification apparatus having a large water purification capacity, which can be maintained for a long time.
      SOLUTION: The photocatalyst water purification apparatus comprises a photocatalyst-carrying ceramic foam so provided that water to be purified permeates therethrough and an ultraviolet lamp directly irradiating the ceramic foam with ultraviolet rays. The photocatalyst-carrying ceramic foam is preferably in the shape of a flat plate horizontally disposed in a purification tank which the water to be purified is charged into and discharged from. The surface of the ceramic foam irradiated with the ultraviolet rays is as high as, or higher than, that of the water to be treated in the purification tank.
      COPYRIGHT: (C)2007,JPO&INPIT
    • 要解决的问题:提供一种可以长时间保持的具有大的净水能力的便宜的光催化剂水净化装置。 解决方案:光催化剂水净化装置包括携带光催化剂的陶瓷泡沫,使得待净化的水渗入其中,并且紫外线灯直接用紫外线照射陶瓷泡沫。 携带有光催化剂的陶瓷泡沫体优选为水平设置在净化槽中的平板形状,待净化的水被充入和排出。 用紫外线照射的陶瓷泡沫的表面与净化槽中待处理的水的高度一样高。 版权所有(C)2007,JPO&INPIT
    • 10. 发明专利
    • QUARTZ GLASS FOR OPTICS
    • JP2000007370A
    • 2000-01-11
    • JP16890098
    • 1998-06-16
    • TOSHIBA CERAMICS CO
    • TANIIKE SEIJISHINPO MASARUTANAKA MASAFUMITOKUTAKE FUMIO
    • C03C3/06
    • PROBLEM TO BE SOLVED: To obtain an optical quartz glass that suppresses the emission of fluorescence, even when a laser beam of short wavelength is used, and can draw sharp patterns, for example, on wafers by setting the concentration of Ni on the basis of the positive correlation with the intensity of the fluorescence. SOLUTION: A positive correlation between the concentration of Ni and the intensity of its fluorescence can be noticed clearly, when the correlation between the impurity elements in quartz glass and the fluorescent intensity is examined individually. When the concentration of Ni is in the range of from 0.1 ppb to 1.0 ppb, the emission of the fluorescence can be substantially inhibited, regardless of the existence of other elements and their concentrations. If it is in this range, the emission of fluorescence can be inhibited, even when the excimer laser is employed. This merit can be revealed at maximum, when these elements constituted with this optical quartz glass are applied to the optical lithography.