Kryn G. Ihrman

Person

Farmington, MI, US

People

Patents Grantslast 30 patents

Information Patent Grant
Process for alkylation of aromatic diamines
- Patent number 5,204,307
- Issue date Apr 20, 1993
- Ethyl Corporation
- Kryn G. Ihrman
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for alkylation of aromatic diamines
- Patent number 5,103,059
- Issue date Apr 7, 1992
- Ethyl Corporation
- Kryn G. Ihrman
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Selective alkylation process
- Patent number 5,057,625
- Issue date Oct 15, 1991
- Ethyl Corporation
- Kryn G. Ihrman
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Monoalkylation of 1-alkyl-diaminobenzenes
- Patent number 4,611,045
- Issue date Sep 9, 1986
- Ethyl Corporation
- Kryn G. Ihrman
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Monoalkylation of 1-alkyl-diaminobenzenes
- Patent number 4,604,484
- Issue date Aug 5, 1986
- Ethyl Corporation
- Kryn G. Ihrman
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Polyurethanes and process therefor
- Patent number 4,459,399
- Issue date Jul 10, 1984
- Ethyl Corporation
- Kryn G. Ihrman
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
1-Methyl-2,6-diamino-3-isopropyl benzene
- Patent number 4,440,952
- Issue date Apr 3, 1984
- Ethyl Corporation
- Kryn G. Ihrman
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for rearrangement of alkyl groups on aromatic amines
- Patent number 4,341,903
- Issue date Jul 27, 1982
- Ethyl Corporation
- John C. Wollensak
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for rearrangement of alkyl groups on aromatic amines
- Patent number 4,317,931
- Issue date Mar 2, 1982
- Ethyl Corporation
- John C. Wollensak
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Phenol extended polyurethanes prepared by RIM process
- Patent number 4,314,962
- Issue date Feb 9, 1982
- Ethyl Corporation
- John C. Wollensak
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Grant
Aromatic amine alkylation process
- Patent number 4,219,502
- Issue date Aug 26, 1980
- Ethyl Corporation
- Kryn G. Ihrman
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Thioether bis phenolic antioxidants
- Patent number 4,104,255
- Issue date Aug 1, 1978
- Ethyl Corporation
- John C. Wollensak
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Antioxidant
- Patent number 4,066,562
- Issue date Jan 3, 1978
- Ethyl Corporation
- John C. Wollensak
- C07 - ORGANIC CHEMISTRY

Kryn G. Ihrman

Person

Patents Grantslast 30 patents

Process for alkylation of aromatic diamines

Process for alkylation of aromatic diamines

Selective alkylation process

Monoalkylation of 1-alkyl-diaminobenzenes

Monoalkylation of 1-alkyl-diaminobenzenes

Polyurethanes and process therefor

1-Methyl-2,6-diamino-3-isopropyl benzene

Process for rearrangement of alkyl groups on aromatic amines

Process for rearrangement of alkyl groups on aromatic amines

Phenol extended polyurethanes prepared by RIM process

Aromatic amine alkylation process

Thioether bis phenolic antioxidants

Antioxidant