Charles R. Wiedrich

Person

Murrysville, PA, US

People

Patents Grantslast 30 patents

Information Patent Grant
Polymerizable polyol (allyl carbonate) compositions
- Patent number 6,423,803
- Issue date Jul 23, 2002
- PPG Industries Ohio, Inc.
- Vidhu J. Nagpal
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Polymerizable polyol (allyl carbonate) compositions
- Patent number 6,077,921
- Issue date Jun 20, 2000
- PPG Industries Ohio, Inc.
- Vidhu J. Nagpal
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Polymerizable polyol (allyl carbonate) composition
- Patent number 5,973,093
- Issue date Oct 26, 1999
- PPG Industries Ohio, Inc.
- Randy E. Daughenbaugh
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Optical resin composition from polyol((meth)acryloyl carbonate) mon...
- Patent number 5,965,680
- Issue date Oct 12, 1999
- PPG Industries Ohio, Inc.
- Robert D. Herold
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Partially polymerized mixture of diethylene glycol (allyl carbonate...
- Patent number 5,952,441
- Issue date Sep 14, 1999
- PPG Industries Ohio, Inc.
- Robert D. Herold
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Polymerizable composition
- Patent number 5,811,503
- Issue date Sep 22, 1998
- PPG Industries, Inc.
- Robert D. Herold
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Polymerizable composition
- Patent number 5,739,243
- Issue date Apr 14, 1998
- PPG Industries, Inc.
- Robert D. Herold
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Chemical feeder
- Patent number 5,427,748
- Issue date Jun 27, 1995
- PPG Industries, Inc.
- Charles R. Wiedrich
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information Patent Grant
Chemical feeder
- Patent number 5,384,102
- Issue date Jan 24, 1995
- PPG Industries, Inc.
- Richard H. Ferguson
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Grant
Solid halogen-containing composition and method for producing same
- Patent number 5,106,559
- Issue date Apr 21, 1992
- PPG Industries, Inc.
- Charles R. Wiedrich
- A01 - AGRICULTURE FORESTRY ANIMAL HUSBANDRY HUNTING TRAPPING FISHING
Information Patent Grant
Chemical feed apparatus
- Patent number 5,089,127
- Issue date Feb 18, 1992
- PPG Industries, Inc.
- David M. Junker
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information Patent Grant
Solid halogen-containing composition and method for producing same
- Patent number 5,049,385
- Issue date Sep 17, 1991
- PPG Industries, Inc.
- Charles R. Wiedrich
- A01 - AGRICULTURE FORESTRY ANIMAL HUSBANDRY HUNTING TRAPPING FISHING
Information Patent Grant
Calcium hypochlorite article
- Patent number 5,009,806
- Issue date Apr 23, 1991
- PPG Industries, Inc.
- Harlan B. Johnson
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Calcium hypochlorite composition
- Patent number 4,970,020
- Issue date Nov 13, 1990
- PPG Industries, Inc.
- Harlan B. Johnson
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Method for inhibiting growth of algae in recreational water
- Patent number 4,927,546
- Issue date May 22, 1990
- PPG Industries, Inc.
- Charles R. Wiedrich
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information Patent Grant
Calcium hypochlorite composition
- Patent number 4,865,760
- Issue date Sep 12, 1989
- PPG Industries, Inc.
- Harlan B. Johnson
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Method for producing vinyl chloride
- Patent number 4,584,420
- Issue date Apr 22, 1986
- PPG Industries, Inc.
- Charles R. Wiedrich
- C07 - ORGANIC CHEMISTRY

Charles R. Wiedrich

Person

Patents Grantslast 30 patents

Polymerizable polyol (allyl carbonate) compositions

Polymerizable polyol (allyl carbonate) compositions

Polymerizable polyol (allyl carbonate) composition

Optical resin composition from polyol((meth)acryloyl carbonate) mon...

Partially polymerized mixture of diethylene glycol (allyl carbonate...

Polymerizable composition

Polymerizable composition

Chemical feeder

Chemical feeder

Solid halogen-containing composition and method for producing same

Chemical feed apparatus

Solid halogen-containing composition and method for producing same

Calcium hypochlorite article

Calcium hypochlorite composition

Method for inhibiting growth of algae in recreational water

Calcium hypochlorite composition

Method for producing vinyl chloride