Charles H. Hoelscher

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Corpus Christi, TX, US

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Patents Grantslast 30 patents

Information Patent Grant
Continuous process for preparing indolenine compounds
- Patent number 5,288,877
- Issue date Feb 22, 1994
- PPG Industries, Inc.
- Charles H. Hoelscher
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Method of separating 2-nitrosophenol isomer from admixture with 4-n...
- Patent number 5,019,659
- Issue date May 28, 1991
- PPG Industries, Inc.
- James A. Manner
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Organic photochromic pigment particulates
- Patent number 4,931,220
- Issue date Jun 5, 1990
- PPG Industries, Inc.
- Ronald L. Haynes
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Method for preparing spiro(indoline)-type photochromic compounds
- Patent number 4,634,767
- Issue date Jan 6, 1987
- PPG Industries, Inc.
- Charles H. Hoelscher
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Method for producing sodium dithionite
- Patent number 4,605,545
- Issue date Aug 12, 1986
- PPG Industries, Inc.
- William B. Darlington
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Solubility stable encapsulated diperisophthalic acid compositions
- Patent number 4,094,808
- Issue date Jun 13, 1978
- PPG Industries, Inc.
- Dorothy A. Stewart
- C11 - ANIMAL AND VEGETABLE OILS, FATS, FATTY SUBSTANCES AND WAXES FATTY ACIDS...