US3103496A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Solutions ok swellings of linear poly-
Assignee: —
•
Filing: —
•
Granted: 1963-09-10
•
Expires: 1980-09-10
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 12:49
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/49; C08K5/5399; C08G; C08G69/00; C08G69/02; C08G69/04; C08G69/26; C08K5/16; C08K5/20; C08L; C08L77/00; D; D01; D01F; D01F6/00; D01F6/58; D01F6/60
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
83 words
A SOLUTION COMPRISING PHOSPHORIC ACID-TRIC-DIMETHYLAMIDE AS A SOLVENT AND, DISSOLVED THEREIN, A LINEAR POLYAMIDE CONSISTING ESSENTIALLY OF AT LEAST 80 PERCENT BY WEIGHT OF AT LEAST ONE B-AMINOCARBOXYLIC ACID SUBSTITUTED IN THE B-POSITION BY TWO ALKYL GROUPS ONE OF WHICH IS METHYL AND THE OTHER OF WHICH IS A MEMBER SELECTED FROM THE GROUP CONSISTING OF ALKYL GROUPS HAVING 1 TO 4 CARBON ATOMS, THE BALANCE OF SAID POLYAMIDE BEING A MEMBER SELECTED FROM THE GROUP CONSISTING OF A, Y, AND E-AMINOCARBOXYLIC ACIDS.
Claim 2
Dependent Claim
83 words
A SOLUTION COMPRISING PHOSPHORIC ACID-TRIC-DIMETHYLAMIDE AS A SOLVENT AND, DISSOLVED THEREIN, A LINEAR POLYAMIDE CONSISTING ESSENTIALLY OF AT LEAST 80 PERCENT BY WEIGHT OF AT LEAST ONE B-AMINOCARBOXYLIC ACID SUBSTITUTED IN THE B-POSITION BY TWO ALKYL GROUPS ONE OF WHICH IS METHYL AND THE OTHER OF WHICH IS A MEMBER SELECTED FROM THE GROUP CONSISTING OF ALKYL GROUPS HAVING 1 TO 4 CARBON ATOMS, THE BALANCE OF SAID POLYAMIDE BEING A MEMBER SELECTED FROM THE GROUP CONSISTING OF A, Y, AND E-AMINOCARBOXYLIC ACIDS.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-09-09 | 1967-03-11 | 1967-09-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-09-09 | 1971-03-11 | 1971-09-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-09-09 | 1975-03-11 | 1975-09-10 | $7700.00 | Window Closed / Lapsed |