Inventor

Philip A. DeFriend

Inventor

Houston, TX, US

Overview

2→

Patents

1994–1997

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.

C08Fprimary

C08FMacromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds40%

C07FAcyclic, carbocyclic or heterocyclic compounds containing elements other than carbon, hydrogen, halogen, oxygen, nitrogen, sulfur, selenium or tellurium20%

F02BInternal-combustion piston engines20%

Y02TClimate change mitigation technologies related to transportation20%

PatentTitleYear

5,605,991'Multifunctional initiator from divinyl dislane'1997 5,276,101'Melt metalation of block copolymers'1994

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1994–1997Patents assigned to SHELL OIL CO (2)· patent assignee history

1994–1997Based 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	2	1994–1997

Locations

Location	Patents	Span
Houston, Texas, US	2	1994–1997