Patent US2863851A successfully refreshed from Google Patents.
US2863851A
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Stabilization of polymerizable materials
Assignee: Rohm and Haas Co
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Filing: 1955-06-27
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Granted: 1958-12-09
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Expires: 1975-06-27
Abstract
No abstract record available.
Inventors
- 👤 Joseph L O'brien
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 06:16
CPC Classifications
C; C07; C07C; C07C7/00; C07C7/20; C08; C08F; C08F2/00; C08F2/38; C08K; C08K5/00; C08K5/16; C08K5/17; C08K5/18
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
30 words
A COMPOSITION COMPRISING A POLYMERIZABLE ESTER OF ACRYLIC ACID AND, AS A STABILIZER THEREFOR, FROM 0.005% TO ABOUT 1%, BASED ON THE WEIGHT OF SAID ESTER, OF THE COMPOUND, N,N''-DI2-(1,4-NAPHTHOQUINONYL)-P-PHENYLENEDIAMINE.
Claim 2
Dependent Claim
30 words
A COMPOSITION COMPRISING A POLYMERIZABLE ESTER OF ACRYLIC ACID AND, AS A STABILIZER THEREFOR, FROM 0.005% TO ABOUT 1%, BASED ON THE WEIGHT OF SAID ESTER, OF THE COMPOUND, N,N''-DI2-(1,4-NAPHTHOQUINONYL)-P-PHENYLENEDIAMINE.
References Cited (Backward Citations)
US2280242A
Cited
US2632753A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-12-08 | 1962-06-09 | 1962-12-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-12-08 | 1966-06-09 | 1966-12-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-12-08 | 1970-06-09 | 1970-12-09 | $7700.00 | Window Closed / Lapsed |