Cletus N. Welch

Person

Clinton, OH, US

People

Patents Grantslast 30 patents

Information Patent Grant
Photochromic polymerizable compositions
- Patent number 6,998,072
- Issue date Feb 14, 2006
- Transitions Optical, Inc.
- Cletus N. Welch
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Articles having a photochromic polymeric coating
- Patent number 6,916,537
- Issue date Jul 12, 2005
- Transitions Optical Inc.
- Cletus N. Welch
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Poly(meth)acrylic photochromic coating
- Patent number 6,602,603
- Issue date Aug 5, 2003
- PPG Industries Ohio, Inc.
- Cletus N. Welch
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Aminoplast resin photochromic coating composition and photochromic...
- Patent number 6,506,488
- Issue date Jan 14, 2003
- PPG Industries Ohio, Inc.
- Kevin J. Stewart
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Grant
Polyanhydride photochromic coating composition and photochromic art...
- Patent number 6,436,525
- Issue date Aug 20, 2002
- PPG Industries Ohio, Inc.
- Cletus N. Welch
- G02 - OPTICS
Information Patent Grant
Aminoplast resin photochromic coating composition and photochromic...
- Patent number 6,432,544
- Issue date Aug 13, 2002
- PPG Industries Ohio, Inc.
- Kevin J. Stewart
- G02 - OPTICS
Information Patent Grant
Photochromic epoxy resin coating composition and articles having su...
- Patent number 6,268,055
- Issue date Jul 31, 2001
- PPG Industries Ohio, Inc.
- Robert W. Walters
- G02 - OPTICS
Information Patent Grant
Alkoxyacrylamide photochromic coatings compositions and photochromi...
- Patent number 6,060,001
- Issue date May 9, 2000
- PPG Industries Ohio, Inc.
- Cletus N. Welch
- G02 - OPTICS
Information Patent Grant
Photochromic compositions of improved fatigue resistance
- Patent number 5,391,327
- Issue date Feb 21, 1995
- Transitions Optical, Inc.
- John S. Ligas
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Water strippable photochromic resin composition
- Patent number 5,185,390
- Issue date Feb 9, 1993
- PPG Industries, Inc.
- Scott Fischer
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Method for preparing photochromic plastic article
- Patent number 5,130,353
- Issue date Jul 14, 1992
- PPG Industries, Inc.
- Scott Fischer
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Photochromic plastic article and method for preparing same
- Patent number 4,880,667
- Issue date Nov 14, 1989
- PPG Industries, Inc.
- Cletus N. Welch
- G02 - OPTICS
Information Patent Grant
Near infrared absorbing polymerizate
- Patent number 4,675,357
- Issue date Jun 23, 1987
- PPG Industries, Inc.
- Cletus N. Welch
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Cathode prepared by electro arc spray metallization, electro arc sp...
- Patent number 4,396,473
- Issue date Aug 2, 1983
- PPG Industries, Inc.
- Gary N. Hughes
- C25 - ELECTROLYTIC OR ELECTROPHORETIC PROCESSES APPARATUS THEREFOR
Information Patent Grant
Process for producing calcium hypochlorite
- Patent number 4,390,512
- Issue date Jun 28, 1983
- PPG Industries, Inc.
- Clifford E. Loehr
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Process for producing calcium hypochlorite
- Patent number 4,328,200
- Issue date May 4, 1982
- PPG Industries, Inc.
- Cletus N. Welch
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Nickel-molybdenum cathode
- Patent number 4,323,595
- Issue date Apr 6, 1982
- PPG Industries, Inc.
- Cletus N. Welch
- C25 - ELECTROLYTIC OR ELECTROPHORETIC PROCESSES APPARATUS THEREFOR
Information Patent Grant
Cathode electrocatalysts for solid polymer electrolyte chlor-alkali...
- Patent number 4,312,738
- Issue date Jan 26, 1982
- PPG Industries, Inc.
- Cletus N. Welch
- C25 - ELECTROLYTIC OR ELECTROPHORETIC PROCESSES APPARATUS THEREFOR
Information Patent Grant
Cathode electrocatalysts for solid polymer electrolyte chlor-alkali...
- Patent number 4,253,922
- Issue date Mar 3, 1981
- PPG Industries, Inc.
- Cletus N. Welch
- C25 - ELECTROLYTIC OR ELECTROPHORETIC PROCESSES APPARATUS THEREFOR
Information Patent Grant
Porous nickel cathode
- Patent number 4,251,478
- Issue date Feb 17, 1981
- PPG Industries, Inc.
- Cletus N. Welch
- C25 - ELECTROLYTIC OR ELECTROPHORETIC PROCESSES APPARATUS THEREFOR
Information Patent Grant
Electrolysis of alkali metal chloride in a cell having a nickel-mol...
- Patent number 4,248,679
- Issue date Feb 3, 1981
- PPG Industries, Inc.
- Cletus N. Welch
- C25 - ELECTROLYTIC OR ELECTROPHORETIC PROCESSES APPARATUS THEREFOR
Information Patent Grant
Method of electrolysis, and electrode for the electrolysis
- Patent number 4,135,995
- Issue date Jan 23, 1979
- PPG Industries, Inc.
- Cletus N. Welch
- C25 - ELECTROLYTIC OR ELECTROPHORETIC PROCESSES APPARATUS THEREFOR
Information Patent Grant
Method of casting silicon
- Patent number 4,101,624
- Issue date Jul 18, 1978
- PPG Industries, Inc.
- Harlan B. Johnson
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Method of mounting silicon anodes in a chlor-alkali cell
- Patent number 3,958,741
- Issue date May 25, 1976
- PPG Industries, Inc.
- Harlan B. Johnson
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Apparatus containing silicon metal joints
- Patent number 3,956,098
- Issue date May 11, 1976
- PPG Industries, Inc.
- Cletus N. Welch
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR

Patents Applicationslast 30 patents

Information Patent Application
Articles having a photochromic polymeric coating
- Publication number 20030143404
- Publication date Jul 31, 2003
- Cletus N. Welch
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Application
Poly (meth) acrylic photochromic coating
- Publication number 20020076549
- Publication date Jun 20, 2002
- Cletus N. Welch
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Application
Photochromic polyurethane coating and articles having such a coating
- Publication number 20020009599
- Publication date Jan 24, 2002
- Cletus N. Welch
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...

Cletus N. Welch

Person

Patents Grantslast 30 patents

Photochromic polymerizable compositions

Articles having a photochromic polymeric coating

Poly(meth)acrylic photochromic coating

Aminoplast resin photochromic coating composition and photochromic...

Polyanhydride photochromic coating composition and photochromic art...

Aminoplast resin photochromic coating composition and photochromic...

Photochromic epoxy resin coating composition and articles having su...

Alkoxyacrylamide photochromic coatings compositions and photochromi...

Photochromic compositions of improved fatigue resistance

Water strippable photochromic resin composition

Method for preparing photochromic plastic article

Photochromic plastic article and method for preparing same

Near infrared absorbing polymerizate

Cathode prepared by electro arc spray metallization, electro arc sp...

Process for producing calcium hypochlorite

Process for producing calcium hypochlorite

Nickel-molybdenum cathode

Cathode electrocatalysts for solid polymer electrolyte chlor-alkali...

Cathode electrocatalysts for solid polymer electrolyte chlor-alkali...

Porous nickel cathode

Electrolysis of alkali metal chloride in a cell having a nickel-mol...

Method of electrolysis, and electrode for the electrolysis

Method of casting silicon

Method of mounting silicon anodes in a chlor-alkali cell

Apparatus containing silicon metal joints

Patents Applicationslast 30 patents

Articles having a photochromic polymeric coating

Poly (meth) acrylic photochromic coating

Photochromic polyurethane coating and articles having such a coating