US3506637A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the preparation of chlorinated polyvinyl chloride
Assignee: Nippon Carbide Industries Co Inc
•
Filing: 1967-04-11
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Granted: 1970-04-14
•
Expires: 1987-04-11
Abstract
No abstract record available.
Inventors
- 👤 Tetuya Makino
- 👤 Susumu Taima
- 👤 Saiji Nozaki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:55
CPC Classifications
C; C08; C08L; C08L27/00; C08L27/22; C08L27/24; C08F; C08F8/00; C08F8/18; C08F8/20
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3287336A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-04-13 | 1973-10-13 | 1974-04-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-04-13 | 1977-10-13 | 1978-04-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-04-13 | 1981-10-13 | 1982-04-14 | $7700.00 | Window Closed / Lapsed |