US3278495A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Terpolymer of ethylene, propylene, and an unsaturated acid derivative from the classof amides, nitriles, anhydrides, esters, and the hydrolysis products thereof
Assignee: Huels AG
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Filing: 1966-04-12
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Granted: 1966-10-11
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Expires: 1986-04-12
Abstract
No abstract record available.
Inventors
- 👤 Hagel Karl-Otto
- 👤 Lenke Gerd
- 👤 Kranzlein Paul
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 09:19
CPC Classifications
C; C08; C08F; C08F8/00; C08F8/12; C08F2810/00; C08F2810/50
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
87 words
AN ADHESIVE LINEAR RANDOM COPOLYMER OF ETHYLENE, PROPYLENE, THE MOLAR RATIO OF ETHYLENE TO PROPYLENE BEING FROM 1:0.8 TO 1:3, RESPECTIVELY, AND A FUNCTIONAL DERIVATIVE OF AN UNSATURATED CARBOXYLIC ACID HAVING 3-20 CARBON ATOMS, SAID FUNCTIONAL DERIVATIVE BEING SELECTED FROM THE GROUP CONSISTING OF AN AMIDE, A NITRILE, AN ANHYDRIDE, AND AN ESTER OF A LOWER ALKANOL, THE MOLAR PERCENTAGE OF THE DERIVATIVE BEING 1 TO 10 PERCENT BASED ON THE MOLS OF ETHYLENE AND PROPYLENE IN THE COPOLYMER, SAID COPOLYMER HAVING A MOLECULAR WEIGHT OF 30,000500,000.
Claim 2
Dependent Claim
87 words
AN ADHESIVE LINEAR RANDOM COPOLYMER OF ETHYLENE, PROPYLENE, THE MOLAR RATIO OF ETHYLENE TO PROPYLENE BEING FROM 1:0.8 TO 1:3, RESPECTIVELY, AND A FUNCTIONAL DERIVATIVE OF AN UNSATURATED CARBOXYLIC ACID HAVING 3-20 CARBON ATOMS, SAID FUNCTIONAL DERIVATIVE BEING SELECTED FROM THE GROUP CONSISTING OF AN AMIDE, A NITRILE, AN ANHYDRIDE, AND AN ESTER OF A LOWER ALKANOL, THE MOLAR PERCENTAGE OF THE DERIVATIVE BEING 1 TO 10 PERCENT BASED ON THE MOLS OF ETHYLENE AND PROPYLENE IN THE COPOLYMER, SAID COPOLYMER HAVING A MOLECULAR WEIGHT OF 30,000500,000.
Claim 3
Dependent Claim
19 words
A COPOLYMER AS DEFINED BY CLAIM 1 WHEREIN THE RADICALS OF THE CARBOXYLIC ACID HAVE BEEN LIBERATED BY HYDROLYSIS.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-10-10 | 1970-04-11 | 1970-10-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-10 | 1974-04-11 | 1974-10-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-10 | 1978-04-11 | 1978-10-11 | $7700.00 | Window Closed / Lapsed |