US3538067A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for the polymerization of vinyl chloride in mass
Assignee: Compagnie de Saint Gobain SA
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Filing: 1967-02-08
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Granted: 1970-11-03
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Expires: 1987-02-08
Abstract
No abstract record available.
Inventors
- 👤 Etienne Bognar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 15:02
CPC Classifications
C; C08; C08F; C08F2/00; C08F2/02; B; B01; B01F; B01F27/00; B01F27/60; B01F27/72; B01F27/726; B01J; B01J19/00; B01J19/18; B01J19/20; B01J3/00; B01J3/04; C08F14/00; C08F14/02; C08F14/04; C08F14/06; B01J2219/00; B01J2219/00049; B01J2219/00051; B01J2219/00054; B01J2219/00056; B01J2219/00058; B01J2219/0006; B01J2219/00074; B01J2219/00087; B01J2219/00094; B01J2219/00162; B01J2219/18; B01J2219/182
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) | 1973-11-02 | 1974-05-04 | 1974-11-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-11-02 | 1978-05-04 | 1978-11-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-11-02 | 1982-05-04 | 1982-11-03 | $7700.00 | Window Closed / Lapsed |