US3268623A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rigid polyvinyl chloride compositions having improved physical properties
Assignee: Monsanto Co
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Filing: 1962-06-21
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Granted: 1966-08-23
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Expires: 1982-06-21
Abstract
No abstract record available.
Inventors
- 👤 Ludwig A Beer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 22:18
CPC Classifications
C; C08; C08F; C08F255/00; C08F255/02; C08F255/023; C08L; C08L51/00; C08L51/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
36 words
A GRAFT COPOLYMER COMPOSITION PREPARED BY POLYMERIZING 60 TO 98% BY WEIGHT OF VINYL CHLORIDE MONOMER WITH 2 TO 40% BY WEIGHT OF A CHLORINATED POLYOLEFIN HAVING A CHLORINE CONTENT OF 15-49% BY WEIGHT DISSOLVED THEREIN.
Claim 2
Dependent Claim
36 words
A GRAFT COPOLYMER COMPOSITION PREPARED BY POLYMERIZING 60 TO 98% BY WEIGHT OF VINYL CHLORIDE MONOMER WITH 2 TO 40% BY WEIGHT OF A CHLORINATED POLYOLEFIN HAVING A CHLORINE CONTENT OF 15-49% BY WEIGHT DISSOLVED THEREIN.
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) | 1969-08-22 | 1970-02-21 | 1970-08-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-22 | 1974-02-21 | 1974-08-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-22 | 1978-02-21 | 1978-08-23 | $7700.00 | Window Closed / Lapsed |