Patent US3432576A successfully refreshed from Google Patents.
US3432576A
Expired / Lapsed
US
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Graft copolymers prepared by polymerizing vinyl chloride in the presence of vinyl acetate polymers
Assignee: Monsanto Co
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Filing: 1964-09-16
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Granted: 1969-03-11
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Expires: 1984-09-16
Abstract
No abstract record available.
Inventors
- 👤 Ludwig A Beer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 14:46
CPC Classifications
C; C08; C08F; C08F263/00; C08F263/02; C08F263/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2816087A
Cited
US3037948A
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GB814393A
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US2947719A
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US2921044A
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US3162696A
Cited
US3218373A
Cited
US3189664A
Cited
US3358054A
Cited
US3334156A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-03-10 | 1972-09-09 | 1973-03-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-03-10 | 1976-09-09 | 1977-03-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-03-10 | 1980-09-09 | 1981-03-11 | $7700.00 | Window Closed / Lapsed |