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Inventor

David O. Chenault

Inventor
Butler, MO, US

Overview

3→
Patents
1981–2005
Patent span
Performing operations
Primary field (CPC B)

Patents· 3 as inventor

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

B29Cprimary
B29CShaping or joining of plastics20%
G02BOptical elements, systems or apparatus20%
B29DProducing particular articles from plastics or from substances in a plastic state10%
B29LIndexing scheme associated with subclass b29c, relating to particular articles10%
B32BLayered products, i.e. products built-up of strata of flat or non-flat, e.g. cellular or honeycomb, form10%
F24SSolar heat collectors10%
Y02EReduction of greenhouse gas [ghg] emissions, related to energy generation, transmission or distribution10%
Y10TTechnical subjects covered by former us classification10%
PatentTitleYear
6,953,917'System and method for ensuring the qualification of a workman to perform a task having established required standards'20054,961,634'Infrared achromatic retarder'19904,253,895'Method and apparatus for forming a segmented mirror parabolic solar collector trough'1981

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1981Patents assigned to TOLTEC IND INC (1)· patent assignee history
1981Based in Clear Lake, IA, US· patent location history
1990Patents assigned to UNIV ALABAMA (1)· patent assignee history
1990Based in Huntsville, AL, US· patent location history
2005Patents assigned to CHENAULT DAVID O (1)· patent assignee history
2005Based in Butler, MO, US· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
CHENAULT DAVID Oself12005
TOLTEC IND INC11981
UNIV ALABAMA11990
Locations
LocationPatentsSpan
Butler, MO, US12005
Huntsville, AL, US11990
Clear Lake, IA, US11981