Iwatani Sangyo Kabushiki Kaisha

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
B08B CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL 157
 
  
 
C07H SUGARS; DERIVATIVES THEREOF; NUCLEOSIDES; NUCLEOTIDES; NUCLEIC ACIDS 198
 
  
 
C12N MICRO-ORGANISMS OR ENZYMES; COMPOSITIONS THEREOF 1166
 
  
 
C23C COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL 1100
 
  
 
C25C PROCESSES FOR THE ELECTROLYTIC PRODUCTION, RECOVERY OR REFINING OF METALS; APPARATUS THEREFOR 118
 
  
 
F25J LIQUEFACTION, SOLIDIFICATION, OR SEPARATION OF GASES OR GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT 128

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
6344130 Method for continuously generating highly concentrated ozone gasNov 19, 99Feb 05, 02[C25C]
D446991 Portable gas burnerJul 26, 99Aug 28, 01[0702]
D426662 Portable gas lanternJul 26, 99Jun 13, 00[2602]
5746841 Process for passivating treatment of piping system for high-purity gasMar 08, 96May 05, 98[C23C]
5536659 DNA fragment comprising a gene encoding ethylene forming enzyme of bacteria and the use thereofMar 01, 94Jul 16, 96[C07H, C12N]
5421902 Non-plasma cleaning method for semiconductor manufacturing apparatusMay 02, 94Jun 06, 95[B08B]
5327729 Simplified apparatus for producing liquid nitrogenJan 19, 93Jul 12, 94[F25J]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
5524386 Method and apparatus for uniting a scion to a stockExpiredJan 20, 95Jun 11, 96[A01G]
5522223 Pulse tube refrigeratorExpiredMar 17, 95Jun 04, 96[F25B]
5515685 Pulse tube refrigeratorExpiredFeb 21, 95May 14, 96[F25B]
5414958 Method and apparatus for uniting a scion to a stockExpiredJul 12, 93May 16, 95[A01G]
5382214 Method for fabricating a cardboard pallet and an apparatus for fabricating the sameExpiredJun 09, 93Jan 17, 95[B31D, B65D]
5267852 Gas cylinderExpiredJul 28, 92Dec 07, 93[F23D]
5230889 Enriched nutritious food product comprising powder of ginseng and method for producing powder of ginsengExpiredFeb 19, 92Jul 27, 93[A61K, A23C]
D336008 Portable gas cooking stoveExpiredMay 31, 91Jun 01, 93[]
5212953 Apparatus for preventing evaporation of liquefied gas in liquefied gas reservoir and its control methodExpiredSep 13, 91May 25, 93[F17C]
5168710 Slush hydrogen production apparatusExpiredDec 04, 91Dec 08, 92[F17C]
5110357 Nonsilica mold material for dental titanium castExpiredAug 03, 90May 05, 92[C09K, C03C, C04B]
4944324 Fuel gas supply equipment with abnormal offensive odor suppressing filterExpiredApr 03, 89Jul 31, 90[F17C]
D295598 Gas lighterExpiredJul 12, 85May 10, 88[]
D295092 Vacuum cleaner nozzleExpiredJul 12, 85Apr 05, 88[]
4665945 Pressure regulator for a fuel gasExpiredMar 10, 86May 19, 87[F16K]
4490348 Method for effecting hydrogen sorption and dissociation on an adsorbent metalExpiredFeb 01, 83Dec 25, 84[C01B, F17C]
4465119 Method and apparatus for controlling current level in arc discharge melting of material to be precision castExpiredSep 01, 81Aug 14, 84[B22D]
4426398 Food product having a main component comprising powder made from soft shell turtles and the method of manufacture thereforExpiredAug 26, 81Jan 17, 84[A23L, A23J, A22C]
D267820 Gas lighterExpiredFeb 25, 80Feb 01, 83[D270]
4357706 Arc generating electric system for a metal casting apparatusExpiredJul 21, 80Nov 02, 82[H05B]

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