Patent US2934555A successfully refreshed from Google Patents.
US2934555A
Expired / Lapsed
US
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Dialkylphosphonoalkyl acrylates and methacrylates and process for preparing same
Assignee: Rohm and Haas Co
•
Filing: 1957-12-12
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Granted: 1960-04-26
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Expires: 1977-12-12
Abstract
No abstract record available.
Inventors
- 👤 Joseph L O'brien
- 👤 Constance A Lane
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 10:42
CPC Classifications
C; C07; C07F; C07F9/00; C07F9/02; C07F9/28; C07F9/38; C07F9/40; C07F9/4003; C07F9/4006
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
6 words
A COMPOUND HAVING THE GENERAL FORMULA
Claim 2
Dependent Claim
6 words
A COMPOUND HAVING THE GENERAL FORMULA
Claim 3
Dependent Claim
9 words
A PROCESS FOR PREPARING A COMPOUND OF THR FORMULA
Claim 4
Dependent Claim
9 words
A PROCESS FOR PREPARING A COMPOUND OF THR 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) | 1963-04-26 | 1963-10-26 | 1964-04-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-04-26 | 1967-10-26 | 1968-04-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-04-26 | 1971-10-26 | 1972-04-26 | $7700.00 | Window Closed / Lapsed |