US4656308A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ethers of acrylamidoglycolic acid and esters
Assignee: Wyeth Holdings LLC
•
Filing: 1985-09-05
•
Granted: 1987-04-07
•
Expires: 2005-09-05
Abstract
Abstract Ethylenically unsaturated monomers containing activated ester groups are used to make polymers and copolymers which are useful in coatings, adhesives and moldings.
Inventors
- 👤 Peter J. Schirmann
- 👤 Werner J. Blank
- 👤 Girish G. Parekh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:28
CPC Classifications
C; C08; C08F; C08F20/00; C08F20/02; C08F20/10; C08F22/00; C08F22/10
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
19 words
An alkyl acrylamidoglycolate alkyl ether wherein the alkyl groups are the same or different and have 1-8 carbon atoms.
Claim 2
Dependent Claim
19 words
An alkyl acrylamidoglycolate alkyl ether wherein the alkyl groups are the same or different and have 1-8 carbon atoms.
Claim 3
Dependent Claim
24 words
The compound of claim 1 selected from the group consisting of methyl acrylamidoglycolate methyl ether, ethyl acrylamidoglycolate ethyl ether, and butyl acrylamidoglycolate butyl ether.
Claim 4
Dependent Claim
12 words
Acrylamidoglycolic acid alkyl ether wherein the alkyl group containing 1-8 carbon atoms.
Claim 5
Dependent Claim
12 words
Acrylamidoglycolic acid alkyl ether wherein the alkyl group containing 1-8 carbon atoms.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-04-06 | 1990-10-06 | 1991-04-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-04-06 | 1994-10-06 | 1995-04-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-04-06 | 1998-10-06 | 1999-04-07 | $7700.00 | Window Closed / Lapsed |