Patents by Inventor Steven Dale Ittei

Steven Dale Ittei has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

Oligomerization, polymerization and copolymerization of substituted and unsubstituted &agr;-methylene-&ggr;-butyrolactones and products thereof

Patent number: 6388036

Abstract: This invention relates to the oligomerization, polymerization and copolymerization of substituted and unsubstituted &agr;-methylene-&ggr;-butyrolactones and the products thereof, Cobalt (II) and cobalt (III) chain transfer catalysts are used to control the molecular weight and impart an aromatic functionality to the products formed.

Type: Grant

Filed: May 31, 2001

Date of Patent: May 14, 2002

Assignee: E. I. du Pont de Nemours and Company

Inventors: Alexei Alexeyevich Gridnev, Steven Dale Ittei

Oligomerization, polymerization and copolymerization of substituted and unsubstituted &agr;-methylene-&ggr;-butyrolactones and products thereof