Inventor

Grace O. Tsien

Inventor

Colonia, NJ, US

Overview

16→

Patents

1983–2005

Patent span

Chemistry

Primary field (CPC C)

Patents· 16 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 bonds33%

B01JChemical or physical processes, e.g. catalysis or colloid chemistry20%

Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests18%

C07CAcyclic or carbocyclic compounds8%

Y02PClimate change mitigation technologies in the production or processing of goods8%

H01JElectric discharge tubes or discharge lamps5%

B29CShaping or joining of plastics3%

C08JWorking-up3%

C08LCompositions of macromolecular compounds3%

Y10TTechnical subjects covered by former us classification3%

PatentTitleYear

6,855,654'Bimetallic catalyst for ethylene polymerization reactions with uniform component distribution'2005 6,740,617'One pot preparation of bimetallic catalysts for ethylene 1-olefin copolymerization'2004 6,713,425'One pot preparation of bimetallic catalysts for ethylene 1-olefin copolymerization'2004 6,569,963'Process for controlling the MWD of a broad or bimodal resin in a single reactor'2003 6,486,089'Bimetallic catalyst for ethylene polymerization reactions with uniform component distribution'2002 6,417,130'One pot preparation of bimetallic catalysts for ethylene 1-olefin copolymerization'2002 6,410,474'Process for controlling the MWD of a broad/bimodal resin in a single reactor'2002 5,882,750'Single reactor bimodal HMW-HDPE film resin with improved bubble stability'1999 5,614,456'Catalyst for bimodal molecular weight distribution ethylene polymers and copolymers'1997 5,539,076'Bimodal molecular weight distribution polyolefins'1996 5,525,678'Process for controlling the MWD of a broad/bimodal resin produced in a single reactor'1996 5,126,414'Control of oligomer level in low pressure polyethylene reactor systems'1992 5,034,364'Multiple chromium compound-containing catalyst composition and olefin polymerization therewith'1991 4,594,440'Process for recovering and purifying herbicidal phenoxybenzoic acid derivatives'1986 4,405,805'Process for recovering and purifying herbicidal phenoxybenzoic acid derivatives'1983 4,401,623'Use of calcium chloride to minimize hydrofluoric acid corrosion to glass during the chlorination of 4-chlorobenzotrifluoride'1983

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1983Patents assigned to RHONE POULENC AGROCHIMIE (1)· patent assignee history

1983Patents assigned to RHONE POULENC IND (1)· patent assignee history

1983–2005Based in Colonia, NJ, US· patent location history

1991–1999Patents assigned to MOBIL OIL CORP (6)· patent assignee history

2002–2005Patents assigned to EXXONMOBIL OIL CORP (5)· patent assignee history

2004Patents assigned to UNIVATION TECH LLC (2)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
MOBIL OIL CORP	6	1991–1999
EXXONMOBIL OIL CORP	5	2002–2005
UNIVATION TECH LLC	2	2004
RHONE POULENC AGROCHIMIE	1	1983
RHONE POULENC IND	1	1983

Locations

Location	Patents	Span
Colonia, New Jersey, US	16	1983–2005