Photoscience Japan Corporation

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
C02F TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE 451
 
  
 
H01J ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS 2126
 
  
 
A61L METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION, OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS, OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS, OR SURGICAL ARTICLES 170
 
  
 
B01J CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS, COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS 1108
 
  
 
B08B CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL 157
 
  
 
G21G CONVERSION OF CHEMICAL ELEMENTS; RADIOACTIVE SOURCES 116

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
6683411 Discharge lamp, ultraviolet ray irradiation apparatus and method of using the apparatusNov 13, 01Jan 27, 04[H01J, G21G]
6538378 Low-pressure mercury vapor discharge lamp and ultraviolet-ray irradiating apparatus and method using the sameJun 08, 00Mar 25, 03[H01J]
6432213 Tube scraperFeb 27, 01Aug 13, 02[B08B]
6193939 Apparatus for ultraviolet light treatment of fluidsJun 07, 99Feb 27, 01[B01J]
5937266 Light irradiating device employing light irradiating modules equipped with a cleaning mechanismJul 10, 96Aug 10, 99[C02F]
5874740 Ultraviolet ray irradiation equipment having scraper rings fitted to light transmission tubesMar 14, 97Feb 23, 99[C02F]
5792433 Light irradiating device with easily replaceable light irradiating lampsMar 08, 96Aug 11, 98[C02F]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
RE39522 Ultraviolet ray irradiation equipment having scraper rings fitted to light transmission tubesExpiredMay 28, 03Mar 20, 07[C02F]
2003/0178,924 Treating apparatus utilizing ultraviolet rayAbandonedJan 06, 03Sep 25, 03[H01K]
6013917 UV ray irradiation apparatus having scraper rings fitted to light transmission tubesExpiredMar 11, 98Jan 11, 00[C02F]

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