US3544280A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for the preparation in mass of vinyl chloride polymers
Assignee: Produits Chimiques Pechiney Saint Gobain
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Filing: 1968-05-03
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Granted: 1970-12-01
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Expires: 1988-05-03
Abstract
No abstract record available.
Inventors
- 👤 Jean Claude Thomas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 04:19
CPC Classifications
B; B01; B01J; B01J19/00; B01J19/18; B01J19/1862; B01F; B01F33/00; B01F33/80; B01F33/81; C; C08; C08F; C08F14/00; C08F14/02; C08F14/04; C08F14/06; B01J2219/00; B01J2219/00049; B01J2219/00051; B01J2219/00074; B01J2219/00076; B01J2219/00083; B01J2219/00087; B01J2219/00094; B01J2219/00162; B01J2219/00189; B01J2219/19; B01J2219/194; B01J2219/1941; B01J2219/1942; Y; Y10; Y10S; Y10S526/00; Y10S526/909
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-11-30 | 1974-06-01 | 1974-12-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-11-30 | 1978-06-01 | 1978-12-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-11-30 | 1982-06-01 | 1982-12-01 | $7700.00 | Window Closed / Lapsed |