David G. Leppard

Person

Marly, CH

People

Patents Grantslast 30 patents

Information Patent Grant
Highly compatible hydroxyphenyltriazine UV-absorbers
- Patent number 7,638,626
- Issue date Dec 29, 2009
- Ciba Specialty Chemicals Corporation
- Dario Lazzari
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Synergistic UV absorber combination
- Patent number 7,332,105
- Issue date Feb 19, 2008
- Ciba Specialty Chemicals Corporation
- Adalbert Braig
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Highly compatible hydroxyphenyltriazine UV-absorbers
- Patent number 7,294,714
- Issue date Nov 13, 2007
- Ciba Specialty Chemicals Corp.
- Dario Lazzari
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Transparent polymer articles of low thickness
- Patent number 7,265,171
- Issue date Sep 4, 2007
- Ciba Specialty Chemicals Corp.
- David George Leppard
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
2-hydroxyphenyl-s-triazine crosslinkers for polymer networks
- Patent number 7,214,742
- Issue date May 8, 2007
- Ciba Specialty Chemicals Corp.
- Thomas Bolle
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Process for the preparation of acylphosphines, acyl oxides and acyl...
- Patent number 7,214,830
- Issue date May 8, 2007
- Ciba Specialty Chemicals Corporation
- David George Leppard
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Transparent polymer articles of low thickness
- Patent number 7,166,653
- Issue date Jan 23, 2007
- Ciba Specialty Chemicals Corp.
- David George Leppard
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Process for the preparation of acylphosphines, acyl oxides and acyl...
- Patent number 7,094,931
- Issue date Aug 22, 2006
- Ciba Specialty Chemicals Corporation
- David George Leppard
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Color photographic material
- Patent number 7,060,425
- Issue date Jun 13, 2006
- Ciba Specialty Chemicals Corp.
- Suruliappa Gowper Jeganathan
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Process for the preparation of acylphosphines, acyl oxides and acyl...
- Patent number 6,888,031
- Issue date May 3, 2005
- Ciba Specialty Chemicals Corporation
- David George Leppard
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Dimeric light stabilizers for polyolefines and polyolefine copolymers
- Patent number 6,495,622
- Issue date Dec 17, 2002
- Ciba Specialty Chemicals Corporation
- David George Leppard
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Photoinitiator mixtures and compositions with alkylphenylbisacylpho...
- Patent number 6,361,925
- Issue date Mar 26, 2002
- Ciba Specialty Chemicals Corporation
- David George Leppard
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Alkylphenylbisacylphosphine oxides and photoinitiator mixtures
- Patent number 6,284,813
- Issue date Sep 4, 2001
- Ciba Specialty Chemicals Corp.
- David George Leppard
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Non-volatile phenylglyoxalic esters
- Patent number 6,048,660
- Issue date Apr 11, 2000
- Ciba Specialty Chemicals Corporation
- David George Leppard
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Alkylphenylbisacylphosphine oxides and photoinitiator mixtures
- Patent number 6,020,528
- Issue date Feb 1, 2000
- Ciba Specialty Chemicals Corporation
- David George Leppard
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Color-photographic recording material
- Patent number 5,998,116
- Issue date Dec 7, 1999
- Ciba Specialty Chemicals Corporation
- Pascal Hayoz
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Alkoxyphenyl-substituted bisacylphosphine oxides
- Patent number 5,965,776
- Issue date Oct 12, 1999
- Ciba Specialty Chemicals Corporation
- David George Leppard
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Molecular complex compounds of acylphosphine oxide and .alpha.-hydr...
- Patent number 5,942,290
- Issue date Aug 24, 1999
- Ciba Specialty Chemicals Corporation
- David George Leppard
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Polymeric compounds derived from 2-hydroxy-phenyl-s-triazines subst...
- Patent number 5,869,588
- Issue date Feb 9, 1999
- Ciba Specialty Chemicals Corporation
- Vien Van Toan
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Color-photographic recording material
- Patent number 5,817,887
- Issue date Oct 6, 1998
- Ciba-Geigy Corporation
- David G. Leppard
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Photopolymerizable compositions comprising alkoxyphenyl-substituted...
- Patent number 5,767,169
- Issue date Jun 16, 1998
- Ciba Specialty Chemicals Corporation
- David George Leppard
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Dimeric bisacylphosphines, oxides and sulfides
- Patent number 5,723,512
- Issue date Mar 3, 1998
- Ciba Specialty Chemicals Corporation
- David G. Leppard
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Acylphosphine oxides
- Patent number 5,721,292
- Issue date Feb 24, 1998
- Ciba Specialty Chemicals Corporation
- David George Leppard
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
2-Hydroxyphenyl-s-Triazines substituted with ethylenically unsatura...
- Patent number 5,672,704
- Issue date Sep 30, 1997
- Ciba-Geigy Corporation
- Vien Van Toan
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
2-(2-hydroxy-3-.alpha. cumyl-5-tert nonyl or dodecyl phenyl)-2H- Be...
- Patent number 5,607,987
- Issue date Mar 4, 1997
- Ciba-Geigy Corporation
- Roland A. E. Winter
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Crystalline form of 2-(2-hydroxy-3-.alpha.-cumyl-5-tert-octylphenyl...
- Patent number 5,574,166
- Issue date Nov 12, 1996
- Ciba-Geigy Corporation
- Roland A. E. Winter
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Electro coat/base coat/clear coat finishes stabilized with soluble...
- Patent number 5,563,242
- Issue date Oct 8, 1996
- Ciba-Geigy Corporation
- Roland A. E. Winter
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
2-(2-hydroxy-3-.alpha.-cumyl-5-nonylor 5-dodecylphenyl)-2H-benzotri...
- Patent number 5,554,760
- Issue date Sep 10, 1996
- Ciba-Geigy Corporation
- Roland A. E. Winter
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Photographic recording material containing a UV absorber
- Patent number 5,538,840
- Issue date Jul 23, 1996
- Ciba-Geigy Corporation
- Vien Van Toan
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Daylight curing compositions containing bisacylphosphine oxide phot...
- Patent number 5,534,559
- Issue date Jul 9, 1996
- Ciba-Geigy Corporation
- David G. Leppard
- C07 - ORGANIC CHEMISTRY

Patents Applicationslast 30 patents

Information Patent Application
TRANSPARENT POLYMER ARTICLES OF LOW THICKNESS
- Publication number 20100178484
- Publication date Jul 15, 2010
- David George Leppard
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Application
TRANSPARENT POLYMER ARTICLES OF LOW THICKNESS
- Publication number 20090291289
- Publication date Nov 26, 2009
- David George Leppard
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Application
Transparent polymer articles of low thickness
- Publication number 20090042006
- Publication date Feb 12, 2009
- David George Leppard
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Application
Highly compatible hydroxyphenyltriazine UV-absorbers
- Publication number 20080032078
- Publication date Feb 7, 2008
- Dario Lazzari
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Application
Transparent polymer articles of low thickness
- Publication number 20070259165
- Publication date Nov 8, 2007
- David George Leppard
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Application
Highly compatible hydroxyphenyltriazine UV-absorbers
- Publication number 20070161726
- Publication date Jul 12, 2007
- Dario Lazzari
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Application
Transparent polymer articles of low thickness
- Publication number 20060141207
- Publication date Jun 29, 2006
- David George Leppard
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Application
Process for the preparation of acylphosphines, acyl oxides and acyl...
- Publication number 20060128959
- Publication date Jun 15, 2006
- David George Leppard
- C07 - ORGANIC CHEMISTRY
Information Patent Application
Synergistic uv absorber combination
- Publication number 20060052491
- Publication date Mar 9, 2006
- Adalbert Braig
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Application
2-Hydroxyphenyl-s-triazine crosslinkers for polymer networks
- Publication number 20050075465
- Publication date Apr 7, 2005
- Thomas Bolle
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Application
Transparent polymer articles of low thickness
- Publication number 20050059758
- Publication date Mar 17, 2005
- David George Leppard
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Application
Process for the preparation of acylphosphines, acyl oxides and acyl...
- Publication number 20040248855
- Publication date Dec 9, 2004
- David George Leppard
- C07 - ORGANIC CHEMISTRY
Information Patent Application
Highly compatible hydroxyphenyltriazine uv-absorbers
- Publication number 20040241111
- Publication date Dec 2, 2004
- Dario Lazzari
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Application
Transparent polymer articles of low thickness
- Publication number 20030236327
- Publication date Dec 25, 2003
- David George Leppard
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Application
Transparent polymer articles of low thickness
- Publication number 20020083641
- Publication date Jul 4, 2002
- David George Leppard
- C07 - ORGANIC CHEMISTRY
Information Patent Application
Alkylphenylbisacylphosphine oxides and photoinitiator mixtures
- Publication number 20020042022
- Publication date Apr 11, 2002
- David George Leppard
- C07 - ORGANIC CHEMISTRY

David G. Leppard

Person

Patents Grantslast 30 patents

Highly compatible hydroxyphenyltriazine UV-absorbers

Synergistic UV absorber combination

Highly compatible hydroxyphenyltriazine UV-absorbers

Transparent polymer articles of low thickness

2-hydroxyphenyl-s-triazine crosslinkers for polymer networks

Process for the preparation of acylphosphines, acyl oxides and acyl...

Transparent polymer articles of low thickness

Process for the preparation of acylphosphines, acyl oxides and acyl...

Color photographic material

Process for the preparation of acylphosphines, acyl oxides and acyl...

Dimeric light stabilizers for polyolefines and polyolefine copolymers

Photoinitiator mixtures and compositions with alkylphenylbisacylpho...

Alkylphenylbisacylphosphine oxides and photoinitiator mixtures

Non-volatile phenylglyoxalic esters

Alkylphenylbisacylphosphine oxides and photoinitiator mixtures

Color-photographic recording material

Alkoxyphenyl-substituted bisacylphosphine oxides

Molecular complex compounds of acylphosphine oxide and .alpha.-hydr...

Polymeric compounds derived from 2-hydroxy-phenyl-s-triazines subst...

Color-photographic recording material

Photopolymerizable compositions comprising alkoxyphenyl-substituted...

Dimeric bisacylphosphines, oxides and sulfides

Acylphosphine oxides

2-Hydroxyphenyl-s-Triazines substituted with ethylenically unsatura...

2-(2-hydroxy-3-.alpha. cumyl-5-tert nonyl or dodecyl phenyl)-2H- Be...

Crystalline form of 2-(2-hydroxy-3-.alpha.-cumyl-5-tert-octylphenyl...

Electro coat/base coat/clear coat finishes stabilized with soluble...

2-(2-hydroxy-3-.alpha.-cumyl-5-nonylor 5-dodecylphenyl)-2H-benzotri...

Photographic recording material containing a UV absorber

Daylight curing compositions containing bisacylphosphine oxide phot...

Patents Applicationslast 30 patents

TRANSPARENT POLYMER ARTICLES OF LOW THICKNESS

TRANSPARENT POLYMER ARTICLES OF LOW THICKNESS

Transparent polymer articles of low thickness

Highly compatible hydroxyphenyltriazine UV-absorbers

Transparent polymer articles of low thickness

Highly compatible hydroxyphenyltriazine UV-absorbers

Transparent polymer articles of low thickness

Process for the preparation of acylphosphines, acyl oxides and acyl...

Synergistic uv absorber combination

2-Hydroxyphenyl-s-triazine crosslinkers for polymer networks

Transparent polymer articles of low thickness

Process for the preparation of acylphosphines, acyl oxides and acyl...

Highly compatible hydroxyphenyltriazine uv-absorbers

Transparent polymer articles of low thickness

Transparent polymer articles of low thickness

Alkylphenylbisacylphosphine oxides and photoinitiator mixtures