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Patents Grants
last 30 patents
Information
Patent Grant
Methods of preparing an intermediate oxidation product from a hydro...
Patent number
5,980,801
Issue date
Nov 9, 1999
Twenty-First Century Research Corporation
Mark W. Dassel
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Reaction control by regulating internal condensation inside a reactor
Patent number
5,939,582
Issue date
Aug 17, 1999
Twenty-First Century Research Corporation
Mark William Dassel
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Methods of removing acetic acid from cyclohexane in the production...
Patent number
5,929,277
Issue date
Jul 27, 1999
Twenty-First Century Research Corporation
David C. DeCoster
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Methods for preparing dibasic acids
Patent number
5,922,908
Issue date
Jul 13, 1999
Twenty-First Century Research Corporation
Mark William Dassel
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Methods for separating catalyst from oxidation mixtures containing...
Patent number
5,908,589
Issue date
Jun 1, 1999
Twenty-First Century Research Corporation
David C. DeCoster
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Reaction control by regulating internal condensation inside a reactor
Patent number
5,883,292
Issue date
Mar 16, 1999
Twenty-First Century Research Corporation
Mark William Dassel
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Methods and devices for controlling the reaction rate of a hydrocar...
Patent number
5,877,341
Issue date
Mar 2, 1999
Twenty-First Century Research Corporation
Eustathios Vassiliou
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Methods of preparing an intermediate oxidation product from a hydro...
Patent number
5,824,819
Issue date
Oct 20, 1998
Twenty-First Century Research Corporation
Mark W. Dassel
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Method and devices for controlling the oxidation of a hydrocarbon t...
Patent number
5,817,868
Issue date
Oct 6, 1998
Twenty-First Century Research Corporation
Ader M. Rostami
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Methods of making intermediate oxidation products by controlling pr...
Patent number
5,801,282
Issue date
Sep 1, 1998
Twenty-First Century Research Corporation
Mark William Dassel
B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information
Patent Grant
Methods and devices for controlling the reaction rate of a hydrocar...
Patent number
5,801,273
Issue date
Sep 1, 1998
Twenty-First Century Research Corporation
Eustathios Vassiliou
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Methods of making intermediate oxidation products by controlling ox...
Patent number
5,654,475
Issue date
Aug 5, 1997
Twenty-First Century Research Corporation
Eustathios Vassiliou
B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information
Patent Grant
Devices for making reaction products by controlling transient conve...
Patent number
5,580,531
Issue date
Dec 3, 1996
Twenty-First Century Research Corporation
Eustathios Vassiliou
B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information
Patent Grant
Devices for making reaction products by controlling pre-coalescing...
Patent number
5,558,842
Issue date
Sep 24, 1996
Twenty-First Century Research Corporation
Eustathios Vassiliou
B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information
Patent Grant
Methods of making intermediate oxidation products by controlling tr...
Patent number
5,502,245
Issue date
Mar 26, 1996
Twenty-First Century Research Corporation
Mark W. Dassel
C07 - ORGANIC CHEMISTRY
Patents Applications
last 30 patents
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last 30 trademarks
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75602349 - REAL
Serial number
75602349
Filing date
Dec 7, 1998
Twenty-First Century Research Corporation
42 - Scientific and technological services and research and design relating thereto
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Serial number
75602346
Filing date
Dec 7, 1998
Twenty-First Century Research Corporation
42 - Scientific and technological services and research and design relating thereto
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75602348
Filing date
Dec 7, 1998
Twenty-First Century Research Corporation
42 - Scientific and technological services and research and design relating thereto
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75602347 - REAL
Serial number
75602347
Filing date
Dec 7, 1998
Twenty-First Century Research Corporation
42 - Scientific and technological services and research and design relating thereto
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75389757 - 21C
Serial number
75389757
Filing date
Nov 13, 1997
Twenty-First Century Research Corporation
42 - Scientific and technological services and research and design relating thereto
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75389845 - TFCRC
Serial number
75389845
Filing date
Nov 13, 1997
Twenty-First Century Research Corporation
42 - Scientific and technological services and research and design relating thereto