Howard C. Welborn Jr.

Person

Houston, TX, US

People

Patents Grantslast 30 patents

Information Patent Grant
Long-chain branched polymers and their production
- Patent number 6,300,451
- Issue date Oct 9, 2001
- Exxon Chemical Patents Inc.
- Aspy Keki Mehta
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Process for polymerizing olefinic feeds under pressure
- Patent number 6,255,410
- Issue date Jul 3, 2001
- Exxon Mobil Chemical Patents Inc.
- Hayashi Shigekauzu
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Ethylene .alpha.-olefin/diene interpolymer-substituted carboxylic a...
- Patent number 5,759,967
- Issue date Jun 2, 1998
- Exxon Chemical Patents Inc.
- Won R. Song
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Ethylene alpha-olefin/diene interpolymer-substituted carboxylic aci...
- Patent number 5,681,799
- Issue date Oct 28, 1997
- Exxon Chemical Patents Inc.
- Won R. Song
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Catalyst compounds for olefin polymerization
- Patent number 5,633,394
- Issue date May 27, 1997
- Exxon Chemical Patents Inc.
- Howard C. Welborn
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process and catalyst for polyolefin density and molecular weight co...
- Patent number 5,580,939
- Issue date Dec 3, 1996
- Exxon Chemical Patents Inc.
- John A. Ewen
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Silicon-bridged transition metal compounds
- Patent number 5,441,920
- Issue date Aug 15, 1995
- Exxon Chemical Patents Inc.
- Howard C. Welborn
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Ethylene alpha-olefin polymer substituted mono- and dicarboxylic ac...
- Patent number 5,435,926
- Issue date Jul 25, 1995
- Exxon Chemical Patents Inc.
- Antonio Gutierrez
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Ethylene alpha-olefin polymer substituted mono- and dicarboxylic ac...
- Patent number 5,433,757
- Issue date Jul 18, 1995
- Exxon Chemical Patents Inc.
- Won R. Song
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Linear ethylene interpolymer blends of interpolymers having narrow...
- Patent number 5,382,631
- Issue date Jan 17, 1995
- Exxon Chemical Patents Inc.
- Ferdinand C. Stehling
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Borated ethylene alpha-olefin polymer substituted mono- and dicarbo...
- Patent number 5,350,532
- Issue date Sep 27, 1994
- Exxon Chemical Patents Inc.
- Won R. Song
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Process and catalyst for polyolefin density and molecular weight co...
- Patent number 5,324,800
- Issue date Jun 28, 1994
- Exxon Chemical Patents Inc.
- Howard C. Welborn
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Silicon-bridged transition metal compounds
- Patent number 5,314,973
- Issue date May 24, 1994
- Exxon Chemical Patents Inc.
- Howard C. Welborn
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Ethylene alpha-olefin polymer substituted mono-and dicarboxylic aci...
- Patent number 5,277,833
- Issue date Jan 11, 1994
- Exxon Chemical Patents Inc.
- Won R. Song
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Ethylene alpha-olefin polymer substituted mono-and dicarboxylic aci...
- Patent number 5,266,223
- Issue date Nov 30, 1993
- Exxon Chemical Patents Inc.
- Won R. Song
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Ethylene alpha-olefin polymer substituted mono- and dicarboxylic ac...
- Patent number 5,229,022
- Issue date Jul 20, 1993
- Exxon Chemical Patents Inc.
- Won R. Song
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Copolymers of ethylene and 1,3-butadiene
- Patent number 5,191,052
- Issue date Mar 2, 1993
- Exxon Chemical Patents Inc.
- Howard C. Welborn
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Polymerization process using a new supported polymerization catalyst
- Patent number 5,183,867
- Issue date Feb 2, 1993
- Exxon Chemical Patents Inc.
- Howard C. Welborn
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Supported polymerization catalyst
- Patent number 5,124,418
- Issue date Jun 23, 1992
- Exxon Chemical Patents Inc.
- Howard C. Welborn
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Silicon-bridged transition metal compounds
- Patent number 5,120,867
- Issue date Jun 9, 1992
- Howard C. Welborn
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
High pressure, high temperature polymerization of ethylene
- Patent number 5,084,534
- Issue date Jan 28, 1992
- Exxon Chemical Patents, Inc.
- Howard C. Welborn
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
New supported polymerization catalyst
- Patent number 5,077,255
- Issue date Dec 31, 1991
- Exxon Chemical Patents Inc.
- Howard C. Welborn
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Silicon-bridged transition metal compounds
- Patent number 5,017,714
- Issue date May 21, 1991
- Exxon Chemical Patents Inc.
- Howard C. Welborn
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Metallocene, hydrocarbylaluminum and hydrocarbylboroxine olefin pol...
- Patent number 5,001,244
- Issue date Mar 19, 1991
- Exxon Chemical Patents Inc.
- Howard C. Welborn
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Non-aqueous process for the preparation of alumoxanes
- Patent number 4,952,714
- Issue date Aug 28, 1990
- Exxon Chemical Patents Inc.
- Howard C. Welborn
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process and catalyst for producing reactor blend polyolefins
- Patent number 4,937,299
- Issue date Jun 26, 1990
- Exxon Research and Engineering Company
- John A. Ewen
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Process and catalyst for producing polyethylene having a broad mole...
- Patent number 4,935,474
- Issue date Jun 19, 1990
- Exxon Research and Engineering Company
- John A. Ewen
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Polymerization process
- Patent number 4,897,455
- Issue date Jan 30, 1990
- Exxon Chemical Patents Inc.
- Howard C. Welborn
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Supported polymerization catalyst
- Patent number 4,808,561
- Issue date Feb 28, 1989
- Exxon Chemical Patents Inc.
- Howard C. Welborn
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Supported polymerization catalyst
- Patent number 4,701,432
- Issue date Oct 20, 1987
- Exxon Chemical Patents Inc.
- Howard C. Welborn
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...

Howard C. Welborn Jr.

Person

Patents Grantslast 30 patents

Long-chain branched polymers and their production

Process for polymerizing olefinic feeds under pressure

Ethylene .alpha.-olefin/diene interpolymer-substituted carboxylic a...

Ethylene alpha-olefin/diene interpolymer-substituted carboxylic aci...

Catalyst compounds for olefin polymerization

Process and catalyst for polyolefin density and molecular weight co...

Silicon-bridged transition metal compounds

Ethylene alpha-olefin polymer substituted mono- and dicarboxylic ac...

Ethylene alpha-olefin polymer substituted mono- and dicarboxylic ac...

Linear ethylene interpolymer blends of interpolymers having narrow...

Borated ethylene alpha-olefin polymer substituted mono- and dicarbo...

Process and catalyst for polyolefin density and molecular weight co...

Silicon-bridged transition metal compounds

Ethylene alpha-olefin polymer substituted mono-and dicarboxylic aci...

Ethylene alpha-olefin polymer substituted mono-and dicarboxylic aci...

Ethylene alpha-olefin polymer substituted mono- and dicarboxylic ac...

Copolymers of ethylene and 1,3-butadiene

Polymerization process using a new supported polymerization catalyst

Supported polymerization catalyst

Silicon-bridged transition metal compounds

High pressure, high temperature polymerization of ethylene

New supported polymerization catalyst

Silicon-bridged transition metal compounds

Metallocene, hydrocarbylaluminum and hydrocarbylboroxine olefin pol...

Non-aqueous process for the preparation of alumoxanes

Process and catalyst for producing reactor blend polyolefins

Process and catalyst for producing polyethylene having a broad mole...

Polymerization process

Supported polymerization catalyst

Supported polymerization catalyst