US2845408A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Linear polymeric amides and methods of making them
Assignee: Rohm and Haas Co
•
Filing: 1954-08-04
•
Granted: 1958-07-29
•
Expires: 1974-08-04
Abstract
No abstract record available.
Inventors
- 👤 Melamed Sidney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 19:04
CPC Classifications
B; B01; B01J; B01J23/00; B01J23/90; B01J23/94; C; C08; C08F; C08F8/00; C08F8/30; C08F8/32; C08F2800/00; C08F2800/10; Y; Y02; Y02P; Y02P20/00; Y02P20/50; Y02P20/584
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
65 words
A COMPOSITION OF MATTER COMPRISING A LINEAR POLYMER THE MAIN CHAIN OF WHICH CONSISTS ENTIRELY OF CARBON ATOMS, SAID POLYMER BEING A COPOLYMER OF ZERO TO ABOUT 52 MOL PERCENT OF METHYL ACRYLATE, 0.1 TO 10 MOL PERCENT OF ACRYLIC ACID, AND AT LEAST 48 MOL PERCENT OF AMIDE UNITS SELECTED FROM THE GROUP CONSISTING OF THOSE OF THE GENERAL FORMULAS I AND II FOLLOWING:
Claim 2
Dependent Claim
65 words
A COMPOSITION OF MATTER COMPRISING A LINEAR POLYMER THE MAIN CHAIN OF WHICH CONSISTS ENTIRELY OF CARBON ATOMS, SAID POLYMER BEING A COPOLYMER OF ZERO TO ABOUT 52 MOL PERCENT OF METHYL ACRYLATE, 0.1 TO 10 MOL PERCENT OF ACRYLIC ACID, AND AT LEAST 48 MOL PERCENT OF AMIDE UNITS SELECTED FROM THE GROUP CONSISTING OF THOSE OF THE GENERAL FORMULAS I AND II FOLLOWING:
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) | 1961-07-28 | 1962-01-27 | 1962-07-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-07-28 | 1966-01-27 | 1966-07-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-07-28 | 1970-01-27 | 1970-07-29 | $7700.00 | Window Closed / Lapsed |