US3770708A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressure sensitive adhesive copolymer formed from vinyl monomer and zwitterion monomer and tapes made therewith
Assignee: 3M Co
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Filing: 1970-12-02
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Granted: 1973-11-06
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Expires: 1990-12-02
Abstract
Abstract PRESSURE-SENSITIVE ADHESIVES FORMED BY COPOLYMERIZING (1) 80-99 WEIGHT PERCENT MONOMER SELECTED FROM THE CLASS OF ACRYLATES HAVING 5-17 CARBON ATOMS IN THE PENDANT CHAIN, METHACRYLATES HAVING 8-17 CARBON ATOMS IN THE PENDANT CHAIN, OR VINYL ESTERS BASED ON CARBOXYLIC ACIDS CONTAINING 4-13 CARBON ATOMS AND (2) 1-20 WEIGHT PERCENT OF TERMINALLY-UNSATURATED ZWITTERION MONOMER POSSESS EXCELLENT PHYSICAL PROPERTIES.
Inventors
- 👤 H Knoepfel
- 👤 S Silver
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:18
CPC Classifications
C; C09; C09J; C09J133/00; C09J133/04; C09J133/06; C09J133/062; C09J7/00; C09J7/30; C09J7/38; C09J7/381; C09J7/385; C09J2301/00; C09J2301/30; C09J2301/302; Y; Y10; Y10S; Y10S526/00; Y10S526/923
Claims Analysis
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-11-05 | 1977-05-07 | 1977-11-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-11-05 | 1981-05-07 | 1981-11-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-11-05 | 1985-05-07 | 1985-11-06 | $7700.00 | Window Closed / Lapsed |