US3554940A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressure-sensitive adhesives
Assignee: Arakawa Rinsan Kagaku Kogyo KK
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Filing: 1968-01-04
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Granted: 1971-01-12
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Expires: 1988-01-04
Abstract
Abstract A PRESSURE-SENSITIVE ADHESIVE WHICH COMPRISES 100 WEIGHT PARTS OF AT LEAST ONE OF NATURAL AND SYNTHETIC RUBBERS AND 30 TO 120 WEIGHT PARTS OF A HYDROGENATED HYDROCARBON RESIN TACKIFIER PREPARED BY POLYMERIZING A CRACKED PETROLEUM FRACTION, BOILING BETWEEN - 10 AND 280*C. AND CONTAINING UNSATURATED HYDROCARBONS AT LEAST 50 WEIGHT PERCENT OF WHICH IS AT LEAST ONE OF AROMATIC OLEFINS, CYCLIC OLEFINS AND CYCLIC DIOLEFINS, AND HYDROGENATING THE RESULTANT POLYMER TO A HYDROGENATION RATE OF AT LEAST 40 PERCENT.
Inventors
- 👤 Morimasa Arakawa
- 👤 Bunjiro Yamada
- 👤 Akisato Katanosaka
- 👤 Kazuhiko Kato
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 17:10
CPC Classifications
C; C08; C08F; C08F8/00; C08F8/04; C08F240/00; C08L; C08L21/00; C09; C09J; C09J121/00; C09J157/00; C09J157/02; C09J165/00; C08L2666/00; C08L2666/02; C08L2666/04; C08L2666/06; Y; Y10; Y10S; Y10S525/00; Y10S525/94
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) | 1974-01-11 | 1974-07-13 | 1975-01-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-11 | 1978-07-13 | 1979-01-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-11 | 1982-07-13 | 1983-01-12 | $7700.00 | Window Closed / Lapsed |