US2754291A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyamino acids
Assignee: Individual
•
Filing: 1951-08-09
•
Granted: 1956-07-10
•
Expires: 1971-08-09
Abstract
No abstract record available.
Inventors
- 👤 Maxwell A Pollack
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 16:49
CPC Classifications
C; C08; C08F; C08F8/00; C08F8/30; C08F8/32; C08F2800/00; C08F2800/10; Y; Y10; Y10S; Y10S516/00; Y10S516/01; Y10S516/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
21 words
AS A NEW COMPOUND, THE HYDROPHILIC AMINO DERIVATIVE OF THE HOMOPOLYMER OF ACRYLIC ACID, THE SAID DERIVATIVE BEING OF THE FORMULA
Claim 2
Dependent Claim
21 words
AS A NEW COMPOUND, THE HYDROPHILIC AMINO DERIVATIVE OF THE HOMOPOLYMER OF ACRYLIC ACID, THE SAID DERIVATIVE BEING OF THE FORMULA
References Cited (Backward Citations)
US2304637A
Cited
US2548091A
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US2508717A
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US2533166A
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US2582194A
Cited
US2622074A
Cited
US2626944A
Cited
US2671072A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-07-10 | 1960-01-09 | 1960-07-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-07-10 | 1964-01-09 | 1964-07-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-07-10 | 1968-01-09 | 1968-07-10 | $7700.00 | Window Closed / Lapsed |