US3728212A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hot melt adhesive of poly(tetramethylene)terephthalate and polystyrene or polystyrene copolymers
Assignee: Eastman Kodak Co
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Filing: 1971-03-23
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Granted: 1973-04-17
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Expires: 1991-03-23
Abstract
Abstract IMPROVED HOT MELT ADHESIVES COMPRISING A POLY(TETRAMETHYLENE TEREPHTHALATE) POLYESTER HAVING AN INHERENT VISCOSITY OF AT LEAST ABOUT 0.8, BLENDED WITH A VINYL POLYMER SELECTED FROM POLYSTYRENE AND POLYSTYRENE COPOLYMERS AND ARTICLES SECURED THEREWITH.
Inventors
- 👤 J Caldwell
- 👤 W Jackson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 01:03
CPC Classifications
C; C09; C09J; C09J167/00; C09J167/02; C08; C08L; C08L67/00; C08L67/02; C08L2666/00; C08L2666/02; C08L2666/04; Y; Y10; Y10T; Y10T428/00; Y10T428/28; Y10T428/2852; Y10T428/2878; Y10T428/2883; Y10T428/2891; Y10T428/31504; Y10T428/31678; Y10T428/31681; Y10T428/31786
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) | 1976-04-16 | 1976-10-16 | 1977-04-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-16 | 1980-10-16 | 1981-04-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-16 | 1984-10-16 | 1985-04-17 | $7700.00 | Window Closed / Lapsed |