US3213072A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Chlorination product of methylmethacrylate
Assignee: Wyeth Holdings LLC
•
Filing: 1961-08-07
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Granted: 1965-10-19
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Expires: 1981-08-07
Abstract
No abstract record available.
Inventors
- 👤 David S Hoffenberg
- 👤 Louis M Zaccardo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 17:45
CPC Classifications
C; C07; C07C; C07C255/00; C07C51/00; C07C51/347; C07C51/363; C08; C08F; C08F20/00; C08F20/02; C08F20/10; C08F20/22
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
8 words
A POLYMER OF A COMPOUND HAVING THE FORMULA
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) | 1968-10-18 | 1969-04-19 | 1969-10-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-10-18 | 1973-04-19 | 1973-10-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-10-18 | 1977-04-19 | 1977-10-19 | $7700.00 | Window Closed / Lapsed |