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Inventor

Robert H. Sefton

Inventor
Bradford, PA, US

Overview

2→
Patents
1979–2012
Patent span
Chemistry
Primary field (CPC C)

Patents· 2 as inventor

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

B32Bprimary
B32BLayered products, i.e. products built-up of strata of flat or non-flat, e.g. cellular or honeycomb, form25%
C08JWorking-up25%
C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients25%
Y10TTechnical subjects covered by former us classification25%
PatentTitleYear
8,178,016'Method for manufacturing a multilayered composite molded part'20124,165,413'Process for producing phenolic foams with a uniform appearance'1979

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1979Patents assigned to KOPPERS CO INC (1)· patent assignee history
1979Based in McMurray, PA, US· patent location history
2012Patents assigned to DIETZ MARTIN (1)· patent assignee history
2012Patents assigned to RAMSEY ALAN (1)· patent assignee history
2012Patents assigned to SEFTON ROBERT H (1)· patent assignee history
2012Patents assigned to WERZ JOCHEN (1)· patent assignee history
2012Based in Bradford, PA, US· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
DIETZ MARTIN12012
KOPPERS CO INC11979
RAMSEY ALAN12012
SEFTON ROBERT Hself12012
WERZ JOCHEN12012
Locations
LocationPatentsSpan
Bradford, Pennsylvania, US12012
McMurray, Pennsylvania, US11979