US3655718A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polycarbonate stabilizer compositions
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1970-01-07
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Granted: 1972-04-11
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Expires: 1990-01-07
Abstract
Abstract POLYPHOSPHOROUS CONDENSATION PRODUCTS, POLYBORATE CONDENSATION PRODUCTS, POLYCARBONATE CONDENSATION PRODUCTS AND POLYSILICATE CONDENSATION PRODUCTS OF 4,4''-BISPHENOLS ARE ESPECIALLY EFFECTIVE STABILIZERS FOR POLYOLEFINS.
Inventors
- 👤 Henry G Schutze
- 👤 Herschel C Williams
- 👤 Norman P Neureiter
- 👤 Delos E Bown
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 16:27
CPC Classifications
C; C07; C07C; C07C323/00; C07F; C07F5/00; C07F5/02; C07F5/04; C07F7/00; C07F7/02; C07F7/08; C07F7/0834; C07F9/00; C07F9/02; C07F9/06; C07F9/08; C07F9/28; C07F9/38; C07F9/40; C07F9/4071; C07F9/4084; C08; C08K; C08K5/00; C08K5/04; C08K5/10; C08K5/11; C08K5/13; C08K5/134; C08K5/36; C08K5/37; C08K5/375; C08K5/49; C08K5/51; C08K5/54; C08K5/541; C08K5/5415; C08K5/5419; C08L; C08L23/00; C08L23/02
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) | 1975-04-11 | 1975-10-11 | 1976-04-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-04-11 | 1979-10-11 | 1980-04-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-04-11 | 1983-10-11 | 1984-04-11 | $7700.00 | Window Closed / Lapsed |