Viesturs Lesins

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Buffalo, NY, US

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Patents Grantslast 30 patents

Information Patent Grant
Reducing meta content of isomeric mixtures of halo substituted alky...
- Patent number 6,284,934
- Issue date Sep 4, 2001
- Occidental Chemical Corporation
- Michael J. Fifolt
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Method of making high purity 2,4- and 3,4-dichlorotoluene
- Patent number 6,156,945
- Issue date Dec 5, 2000
- Occidental Chemical Corporation
- Viesturs Lesins
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Reducing meta content of isomeric mixtures of halo substituted tolu...
- Patent number 6,130,361
- Issue date Oct 10, 2000
- Occidental Chemical Corporation
- Viesturs Lesins
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Sulfodechlorinating aromatic compounds
- Patent number 6,040,477
- Issue date Mar 21, 2000
- Occidental Chemical Corporation
- Habib Hichri
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Method of making oxydiphthalic anhydride
- Patent number 5,336,788
- Issue date Aug 9, 1994
- Occidental Chemical Corporation
- Viesturs Lesins
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for the preparation of oxydiphthalic acid and purified oxyd...
- Patent number 5,145,971
- Issue date Sep 8, 1992
- Occidental Chemical Corporation
- Viesturs Lesins
- C07 - ORGANIC CHEMISTRY