US3817890A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Adhesive composition and process
Assignee: Compagnie Generale des Etablissements Michelin SCA
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Filing: 1972-04-06
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Granted: 1974-06-18
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Expires: 1992-04-06
Abstract
Abstract A PROCESS FOR MAKING AN ADHESIVE WHICH COMPRISES BLENDING ONE OR SEVERAL ELASTOMER LATICES AND A PHENOPLAST SYSTEM BASED ON A PRECONDENSATE OF FORMALDEHYDE, RESORCINOL AND A PARA-SUBSTITUTED PHENOL HAVING ONE OR TWO ACTIVE METHYLENE GROUPS AND A PRECONDENSATE OF FORMALDEHYDE AND RESORCINOL.
Inventors
- 👤 G Rouzier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 18:01
CPC Classifications
C; C08; C08J; C08J5/00; C08J5/04; C08J5/06; C08G; C08G8/00; C08G8/04; C08G8/08; C08G8/24; C09; C09J; C09J121/00; C09J121/02; C09J161/00; C09J161/04; C09J161/06; C08J2321/00; C08L; C08L2666/00; C08L2666/02; C08L2666/14
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) | 1977-06-17 | 1977-12-17 | 1978-06-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-06-17 | 1981-12-17 | 1982-06-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-06-17 | 1985-12-17 | 1986-06-18 | $7700.00 | Window Closed / Lapsed |