Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
Home › Polyurethane polymers comprising macrocyclic crown ethers in the polymer backbone

Polyurethane polymers comprising macrocyclic crown ethers in the polymer backbone

US Patent 4438251 · Granted Mar 20, 1984

Estimated economic value: $4,759,000 ⓘ

Assignee

Inventors

View full patent text on Google Patents →

More Patents by These Inventors

Highly insoluble azole embossing inhibitor and the use thereof1995
Alkoxysilane and alkoxysilane terminated polyamic or polyimide lacquer compositi1991
Bicyclic acrylic monomers1987
Novel polyacrylic esters bearing pendant macrocyclic ethers and electrically con1987
Novel polyacrylic esters bearing pendant macrocyclic ethers and electrically con1987
Novel polyacrylic esters bearing pendant macrocyclic ethers and electrically con1986
3-Substituted- 7-dialkylamino-spiro(2H-1-benzopyran-2,3'-(3H)-naphtha(2,1-b)pyra1983
3-Substituted-7-alkoxy-spiro(2H -1-benzopyran-2,3'-(3H)-naphtho(2,1-B)pyrans)1983
3-Substituted-7-alkoxy-2,2'-Spirobi[2H-1-benzopyrans]1982
Process for fixing photo-induced colored derivatives of spiropyrans and composit1982
7-Dimethylamino-3-substituted-2,2'-spirobi[2H-1-benzopyrans]1982