US2978501A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stabilized carboxylic monomers
Assignee: Goodrich Corp
•
Filing: 1958-06-02
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Granted: 1961-04-04
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Expires: 1978-06-02
Abstract
No abstract record available.
Inventors
- 👤 Quandt M Adams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 03:46
CPC Classifications
C; C08; C08F; C08F2/00; C08F2/38; C07; C07C; C07C51/00; C07C51/42; C07C51/50; C08F2/40
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
68 words
A COMPOSITION OF MATTER COMPRISING A MEMBER SELECTED FROM THE GROUP CONSISTING OF ACRYLIC ACID AND METHACRYLIC ACID OF AT LEAST 95% PURITY TO WHICH HAS BEEN ADDED A CONTROLLED AMOUNT OF FROM ABOUT 2 TO ABOUT 10 PARTS PER MILLION OF PHENOTHIAZINE AS THE SOLE STABILIZING INGREDIENT SAID COMPOSITION BEING STABLE AGAINST SPONTANEOUS POLYMERIZATION FOR A PERIOD OF AT LEAST TWO WEEKS AT A TEMPERATURE OF 50*C.
Claim 2
Dependent Claim
68 words
A COMPOSITION OF MATTER COMPRISING A MEMBER SELECTED FROM THE GROUP CONSISTING OF ACRYLIC ACID AND METHACRYLIC ACID OF AT LEAST 95% PURITY TO WHICH HAS BEEN ADDED A CONTROLLED AMOUNT OF FROM ABOUT 2 TO ABOUT 10 PARTS PER MILLION OF PHENOTHIAZINE AS THE SOLE STABILIZING INGREDIENT SAID COMPOSITION BEING STABLE AGAINST SPONTANEOUS POLYMERIZATION FOR A PERIOD OF AT LEAST TWO WEEKS AT A TEMPERATURE OF 50*C.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-04-03 | 1964-10-03 | 1965-04-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-04-03 | 1968-10-03 | 1969-04-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-04-03 | 1972-10-03 | 1973-04-04 | $7700.00 | Window Closed / Lapsed |