Japan Oxygen Co., Ltd.

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
D338133 Cook pot with coverExpiredJan 30, 90Aug 10, 93[]
5222549 Condenser/evaporatorExpiredApr 27, 90Jun 29, 93[F25J]
D335422 Cook pot with coverExpiredJan 30, 90May 11, 93[]
5158746 Apparatus for quantifying oxygenExpiredMar 15, 91Oct 27, 92[G01J, G01N]
D325633 Oxygen breathing unitExpiredSep 28, 89Apr 21, 92[]
D321628 Vacuum bottleExpiredAug 24, 87Nov 19, 91[]
D320473 Breathing maskExpiredSep 28, 89Oct 01, 91[]
D318599 Vacuum bottleExpiredSep 01, 88Jul 30, 91[]
5021352 Method for quantifying oxygenExpiredJan 26, 88Jun 04, 91[G01N]
5015272 Adsorptive separation processExpiredMay 16, 89May 14, 91[B01D]
D314888 Vacuum bottleExpiredSep 06, 88Feb 26, 91[]
4990254 Portable water purifierExpiredJan 24, 90Feb 05, 91[B01D]
D309237 Vacuum bottleExpiredAug 24, 87Jul 17, 90[]
D306953 Vacuum bottleExpiredOct 09, 87Apr 03, 90[]
4871695 Process for the production of glassExpiredOct 17, 88Oct 03, 89[C03C]
4828593 Process for the production of glassExpiredOct 27, 87May 09, 89[C03C, C03B]
4828594 Process for the production of glassExpiredOct 27, 87May 09, 89[C03C, C03B]
4828595 Process for the production of glassExpiredOct 27, 87May 09, 89[C03C, C03B]
4801437 Process for treating combustible exhaust gases containing silane and the likeExpiredDec 02, 86Jan 31, 89[C01B]
4629157 Remote-control apparatus for opening or closing the valve of containers or the likeExpiredNov 30, 84Dec 16, 86[F16K]

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