US2576502A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymers of reaction products of alkyl amines and methylene-bismethacrylamide
Assignee: Sun Chemical Corp
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Filing: 1949-04-01
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Granted: 1951-11-27
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Expires: 1969-04-01
Abstract
No abstract record available.
Inventors
- 👤 Philip B Dalton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 04:39
CPC Classifications
C; C07; C07C; C07C233/00; C07C233/01; C07C233/34; C08; C08F; C08F20/00; C08F20/02; C08F20/10
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
12 words
AS A NEW PRODUCT, A POLYMER OF A COMPOUND HABING 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) | 1954-11-26 | 1955-05-28 | 1955-11-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-11-26 | 1959-05-28 | 1959-11-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-11-26 | 1963-05-28 | 1963-11-27 | $7700.00 | Window Closed / Lapsed |