Patent US2632019A successfully refreshed from Google Patents.
US2632019A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Alkyl esters of phosphono bis beta cyanoethyl acetic acid and acetic acid nitrile
Assignee: Uniroyal Inc
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Filing: 1951-03-30
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Granted: 1953-03-17
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Expires: 1971-03-30
Abstract
No abstract record available.
Inventors
- 👤 Elbert C Ladd
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 19:31
CPC Classifications
C; C07; C07F; C07F9/00; C07F9/02; C07F9/28; C07F9/38; C07F9/40; C07F9/4003; C07F9/4006
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
33 words
A PROCESS WHICH COMPRISES REACTING TWO MOLECULAR PROPORTIONS OF ACRYLONITRILE WITH ONE MOLECULAR PROPORTION OF A FULLY ESTERFIED ALKYL ESTER OF AN ACID SELECTED FROM THE CLASS CONSISTING OF PHOSPHONACETIC ACID, AND PHOSPHONOACETONITRILE.
Claim 2
Dependent Claim
33 words
A PROCESS WHICH COMPRISES REACTING TWO MOLECULAR PROPORTIONS OF ACRYLONITRILE WITH ONE MOLECULAR PROPORTION OF A FULLY ESTERFIED ALKYL ESTER OF AN ACID SELECTED FROM THE CLASS CONSISTING OF PHOSPHONACETIC ACID, AND PHOSPHONOACETONITRILE.
References Cited (Backward Citations)
US2503245A
Cited
US2557805A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-03-16 | 1956-09-15 | 1957-03-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-03-16 | 1960-09-15 | 1961-03-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-03-16 | 1964-09-15 | 1965-03-17 | $7700.00 | Window Closed / Lapsed |