Inventor

Raymond T. Leibfried

Inventor
Newark, DE, US

Overview

18→
Patents
1976–2001
Patent span
Chemistry
Primary field (CPC C)

Patents· 18 as inventor

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

C08Lprimary
C08LCompositions of macromolecular compounds25%
C08GMacromolecular compounds obtained otherwise than by reactions only involving unsaturated carbon-to-carbon bonds20%
Y10TTechnical subjects covered by former us classification11%
C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients9%
H05KPrinted circuits9%
C08BPolysaccharides5%
D21HPulp compositions5%
C12PFermentation or enzyme-using processes to synthesise a desired chemical compound or composition or to separate optical isomers from a racemic mixture4%
B29KIndexing scheme associated with subclasses b29b, b29c or b29d, relating to moulding materials or to materials for moulds, reinforcements, fillers or preformed parts, e.g. inserts2%
C07FAcyclic, carbocyclic or heterocyclic compounds containing elements other than carbon, hydrogen, halogen, oxygen, nitrogen, sulfur, selenium or tellurium2%

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1976–2001Patents assigned to HERCULES INC (18)· patent assignee history
1976–2001Based in Newark, DE, US· patent location history
1990–1992Based in Wilmington, DE, US· patent location history
1993Patents assigned to UNIV SOUTHERN CALIFORNIA (1)· patent assignee history
1994–1995Based in New Castle, DE, US· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
HERCULES INC181976–2001
UNIV SOUTHERN CALIFORNIA11993
Locations
LocationPatentsSpan
Newark, Delaware, US91976–2001
New Castle, Delaware, US51994–1995
Wilmington, Delaware, US41990–1992