Assignee
FLEXSYS AMERICA LP
US·27 granted patents·3 pending applications·353 citations·filing 1995–2024
Top patents by PatentIndex Score
30 records- 0192US6395933B1Process for preparing 4-aminodiphenylamine intermediatesFLEXSYS AMERICA LP·Filed 2001·Granted May 28, 2002·38 cites·26 claims
- 0292US5608111AMethod of preparing 4-aminodiphenylamineFLEXSYS AMERICA LP·Filed 1995·Granted Mar 4, 1997·58 cites·31 claims
- 0390US6583320B2Process for preparing 4-aminodiphenylamine intermediatesFLEXSYS AMERICA LP·Filed 2002·Granted Jun 24, 2003·29 cites·27 claims
- 0490US6184276B1Quinone diimine as a rubber additiveFLEXSYS AMERICA LP·Filed 2000·Granted Feb 6, 2001·36 cites·16 claims
- 0590US5623088AMethod of preparing 4-aminodiphenylamineFLEXSYS AMERICA LP·Filed 1995·Granted Apr 22, 1997·30 cites·5 claims
- 0686US6140538AProcess for preparing 4-aminodiphenylaminesFLEXSYS AMERICA LP·Filed 1999·Granted Oct 31, 2000·39 cites·40 claims
- 0781US5633407AProcess for preparing substituted aromatic aminesFLEXSYS AMERICA LP·Filed 1995·Granted May 27, 1997·17 cites·33 claims
- 0878US5977411ACatalytic hydrogeneration of nitrobenzene to 4-aminodiphenylamine in the presence of a hydroxyl compound and a solventFLEXSYS AMERICA LP·Filed 1997·Granted Nov 2, 1999·22 cites·25 claims
- 0977US7183439B2Process for preparing 4-aminodiphenylamine intermediatesFLEXSYS AMERICA LP·Filed 2003·Granted Feb 27, 2007·8 cites·25 claims
- 1075US6420581B1Manufacture of zinc hexasulfide amine complexesFLEXSYS AMERICA LP·Filed 2000·Granted Jul 16, 2002·13 cites·8 claims
- 1172US11905256B2Triazinanes and methods of making themFLEXSYS AMERICA LP·Filed 2019·Granted Feb 20, 2024·1 cites·20 claims
- 1272US6646029B1Pyrimidine derivatives as hardness stabilizersFLEXSYS AMERICA LP·Filed 2001·Granted Nov 11, 2003·10 cites·24 claims
- 1369US6271420B1Preparation of quinonediimines from phenylenediamines using hydrogen peroxide and a catalystFLEXSYS AMERICA LP·Filed 2000·Granted Aug 7, 2001·6 cites·22 claims
- 1467US6114469ARubber compositions containing zinc hexasulfide complexesFLEXSYS AMERICA LP·Filed 1998·Granted Sep 5, 2000·20 cites·14 claims
- 1563US6465604B2Pyrimidine derivatives as hardness stabilizersFLEXSYS AMERICA LP·Filed 2001·Granted Oct 15, 2002·5 cites·16 claims
- 1658US2025368607A1Quinolineamine antidegradant compounds and uses thereofFLEXSYS AMERICA LP·Filed 2023·Application pending·0 cites
- 1758US2025066304A1Antidegradant compounds and uses thereofFLEXSYS AMERICA LP·Filed 2024·Application pending·0 cites
- 1854US2011105669A1Process of forming vulcanizable elastomeric compositions using ultra accelerators and products formed therefromFLEXSYS AMERICA LP·Filed 2009·Application pending·0 cites
- 1952US12410144B2Triazinane derivatives and methods of making themFLEXSYS AMERICA LP·Filed 2020·Granted Sep 9, 2025·0 cites·20 claims
- 2050US5959126AFormation of quinonedimines from phenylenediamines by catalytic oxidationFLEXSYS AMERICA LP·Filed 1998·Granted Sep 28, 1999·4 cites·28 claims
- 2149US6533859B2Surface treated carbon black having improved dispersability in rubber and compositions of rubber therefrom having improved processability, rheological and dynamic mechanical propertiesFLEXSYS AMERICA LP·Filed 2001·Granted Mar 18, 2003·5 cites·20 claims
- 2246US12516028B2Triazinanes possessing thiosulfonate end-groups and methods of making themFLEXSYS AMERICA LP·Filed 2021·Granted Jan 6, 2026·0 cites·17 claims
- 2345US5618979AProcess for preparing substituted aromatic aminesFLEXSYS AMERICA LP·Filed 1995·Granted Apr 8, 1997·2 cites·28 claims
- 2443US6187937B1Preparation of N-phenyl-benzoquinoneimine from hydroxydiphenylaminesFLEXSYS AMERICA LP·Filed 1998·Granted Feb 13, 2001·2 cites·21 claims
- 2543US6043384APreparation of quinoneimines from hydroxyphenylamines using hydrogen peroxide and a catalystFLEXSYS AMERICA LP·Filed 1999·Granted Mar 28, 2000·2 cites·19 claims
- 2641US6114554APreparation of quinonediimines from phenylenediamines using a hypochlorite as an oxidation agentFLEXSYS AMERICA LP·Filed 1998·Granted Sep 5, 2000·2 cites·31 claims
- 2741US6025508APreparation of quinonediimines from phenylenediamines using oxygen and a metal or metal salt catalystFLEXSYS AMERICA LP·Filed 1999·Granted Feb 15, 2000·2 cites·37 claims
- 2840US7718722B2Alkylthio- and aryl(heteroyl)thio-substituted p-phenylenediamines, their manufacture and their use in rubberFLEXSYS AMERICA LP·Filed 2003·Granted May 18, 2010·0 cites·37 claims
- 2938US6072061APreparation of quinoneimines from hydroxyphenylamines using a hypochlorite as an oxidation agentFLEXSYS AMERICA LP·Filed 1999·Granted Jun 6, 2000·1 cites·28 claims
- 3028US6184385B1Process for the manufacture of a sulfenimideFLEXSYS AMERICA LP·Filed 1999·Granted Feb 6, 2001·1 cites·20 claims
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