US3761307A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of making polyurethane pressure sensitive adhesive tape
Assignee: Individual
•
Filing: 1970-06-29
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Granted: 1973-09-25
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Expires: 1990-06-29
Abstract
Abstract VERY RAPID CATALYTIC FORMATION AND PLYMERIZATION OF POLYURETHANE POLYMERS FOLLWOED BY CROSS-LINKING WITH COMPLEX, HINDERED POLYAMINES PERMITS ONE-STEP, IN SITU AND CONTINUOUS PRODUCTION OF NEW TYPES OF PRESSURE-SENSITIVE ADHESIVES AND IMPREGNATED PREMEABLE MATERIALS.
Inventors
- 👤 R Dahl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:50
CPC Classifications
D; D21; D21H; D21H17/00; D21H17/20; D21H17/33; D21H17/46; D21H17/54; D21H17/57; C; C08; C08G; C08G18/00; C08G18/06; C08G18/08; C08G18/16; C08G18/22; C08G18/28; C08G18/65; C08G18/66; C08G18/6666; C08G18/667; C08G18/6681; C08G18/6685; C09; C09J; C09J175/00; C09J175/04; C09J175/08; C09J7/00; C09J7/20; C09J7/21; C09J7/22; C09J7/30; C09J7/38; C08G2170/00; C08G2170/40; C08L; C08L2666/00; C08L2666/02; C08L2666/28; Y; Y10; Y10S; Y10S528/00; Y10S528/905
Claims Analysis
Total Claims: 0
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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) | 1976-09-24 | 1977-03-26 | 1977-09-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-24 | 1981-03-26 | 1981-09-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-24 | 1985-03-26 | 1985-09-25 | $7700.00 | Window Closed / Lapsed |