US3522227A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymerization of vinyl chloride
Assignee: Produits Chimiques Pechiney Saint Gobain
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Filing: 1969-06-11
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Granted: 1970-07-28
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Expires: 1989-06-11
Abstract
No abstract record available.
Inventors
- 👤 Jean Claude Thomas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 15:27
CPC Classifications
B; B01; B01F; B01F27/00; B01F27/80; B01F27/85; C; C08; C08F; C08F14/00; C08F14/02; C08F14/04; C08F14/06; B01F27/05; B01F27/09; B01F27/091; B01J; B01J2219/00; B01J2219/18; B01J2219/182; Y; Y10; Y10S; Y10S526/00; Y10S526/909; Y10S526/918
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2600695A
Cited
US2715117A
Cited
US3007903A
Cited
US2981724A
Cited
US3057831A
Cited
FR1257780A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-07-27 | 1974-01-26 | 1974-07-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-07-27 | 1978-01-26 | 1978-07-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-07-27 | 1982-01-26 | 1982-07-28 | $7700.00 | Window Closed / Lapsed |