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Bret F. Hann
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San Antonio, TX, US
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Patents Grants
last 30 patents
Information
Patent Grant
Cold water soluble polyvinyl alcohol/alkyl acrylate copolymers and...
Patent number
10,316,124
Issue date
Jun 11, 2019
Sekassai Specialty Chemicals America, LLC
Richard Vicari
Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC
Information
Patent Grant
Separator film for batteries including oxidation resistant vinyl al...
Patent number
9,142,835
Issue date
Sep 22, 2015
Sekisui Specialty Chemicals America, LLC
Richard Vicari
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Chemical delivery product and process for making the same
Patent number
8,772,220
Issue date
Jul 8, 2014
Sekisui Specialty Chemicals America, LLC
Richard Vicari
C01 - INORGANIC CHEMISTRY
Information
Patent Grant
Polyvinyl alcohol films with improved resistance to oxidizing chemi...
Patent number
8,728,593
Issue date
May 20, 2014
Sekisui Specialty Chemicals America, LLC
Richard Vicari
B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information
Patent Grant
Polyvinyl alcohol films with improved resistance to oxidizing chemi...
Patent number
7,745,517
Issue date
Jun 29, 2010
Sekisui Specialty Chemicals America, LLC
Richard Vicari
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Method to purify poly(vinyl alcohol)
Patent number
7,524,924
Issue date
Apr 28, 2009
Celanese International Corporation
Bret F. Hann
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Method to purify poly(vinyl alcohol)
Patent number
7,388,069
Issue date
Jun 17, 2008
Celanese International Corporation
Richard Vicari
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Patents Applications
last 30 patents
Information
Patent Application
Cold Water Soluble Polyvinyl Alcohol/Alkyl Acrylate Copolymers and...
Publication number
20120164424
Publication date
Jun 28, 2012
Richard Vicari
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Application
Polyvinyl alcohol films with improved resistance to oxidizing chemi...
Publication number
20100234492
Publication date
Sep 16, 2010
Richard Vicari
B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information
Patent Application
Oxidation resistant separator film for batteries
Publication number
20090148758
Publication date
Jun 11, 2009
Richard Vicari
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Application
Chemical Delivery Product And Process For Making The Same
Publication number
20090054295
Publication date
Feb 26, 2009
Celanese International Corporation
Richard Vicari
C01 - INORGANIC CHEMISTRY
Information
Patent Application
Method to purify poly(vinyl alcohol)
Publication number
20080213210
Publication date
Sep 4, 2008
Bret F. Hann
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Application
Polyvinyl alcohol films with improved resistance to oxidizing chemi...
Publication number
20070259996
Publication date
Nov 8, 2007
Richard Vicari
B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information
Patent Application
Method to purify poly(vinyl alcohol)
Publication number
20070142620
Publication date
Jun 21, 2007
Richard Vicari
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...