Inventor

David Eric Gwyn

Inventor

Houston, TX, US

Overview

7→

Patents

1997–2008

Patent span

Chemistry

Primary field (CPC C)

Patents· 7 as inventor

Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.

C08Gprimary

C08GMacromolecular compounds obtained otherwise than by reactions only involving unsaturated carbon-to-carbon bonds29%

C09DCoating compositions, e.g. paints, varnishes or lacquers14%

C07DHeterocyclic compounds7%

C08LCompositions of macromolecular compounds7%

G01NInvestigating or analysing materials by determining their chemical or physical properties7%

G02FOptical devices or arrangements for the control of light by modification of the optical properties of the media of the elements involved therein7%

H01BCables7%

H01MProcesses or means, e.g. batteries, for the direct conversion of chemical energy into electrical energy7%

Y02EReduction of greenhouse gas [ghg] emissions, related to energy generation, transmission or distribution7%

Y10TTechnical subjects covered by former us classification7%

PatentTitleYear

7,354,531'Polymer electrolyte composition'2008 7,005,496'Production of trimethylene carbonate from poly (trimethylene carbonate) by wiped film reactive evaporation'2006 6,593,444'Thermoplastic polyurethane elastomers (TPUs) prepared with polytrimethylene carbonate soft segment'2003 6,451,949'Method for production of poly (trimethylene carbonate)'2002 6,441,087'High gloss acrylic coatings with improved impact resistance'2002 6,433,131'High gloss acrylic coatings with improved impact resistance cured with melamine'2002 5,652,331'Method for preparing poly-p-dioxanone polymer'1997

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1997–2008Patents assigned to SHELL OIL CO (7)· patent assignee history

1997–2008Based in Houston, TX, US· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
SHELL OIL CO	7	1997–2008

Locations

Location	Patents	Span
Houston, Texas, US	7	1997–2008