US2922771A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Composition of matter comprising polystyrene and carboxyalkylated polyamines
Assignee: Individual
•
Filing: 1956-03-30
•
Granted: 1960-01-26
•
Expires: 1976-03-30
Abstract
No abstract record available.
Inventors
- 👤 Myron A Coler
- 👤 Arnold S Louis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 14:12
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/16; C08K5/17; Y; Y10; Y10S; Y10S260/00; Y10S260/15; Y10S260/19; Y10S524/00; Y10S524/91; Y10S524/913
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
67 words
A COMPOSITION OF MATTER COMPRISING POLYSTYRENE AND BETWEEN 1% AND 50% BY WEIGHT OF AN ADDITIVE FROM THE GROUP CONSISTING OF CARBOXYLATED POLYAMINES CONTAINING FROM 2 TO 6 CARBON ATOMS IN THE ALKYLENE GROUPS CONNECTING THE AMINE NITROGEN ATOMS, FROM 2 TO 8 CARBON ATOMS IN THE CARBOXYALKYL GROUPS AND NO MORE THAN FIVE AMINE NITROGEN ATOMS, AND ALKALI METAL AND QUATERNARY AMMONIUM SALTS OF SAID POLYAMINES.
Claim 2
Dependent Claim
67 words
A COMPOSITION OF MATTER COMPRISING POLYSTYRENE AND BETWEEN 1% AND 50% BY WEIGHT OF AN ADDITIVE FROM THE GROUP CONSISTING OF CARBOXYLATED POLYAMINES CONTAINING FROM 2 TO 6 CARBON ATOMS IN THE ALKYLENE GROUPS CONNECTING THE AMINE NITROGEN ATOMS, FROM 2 TO 8 CARBON ATOMS IN THE CARBOXYALKYL GROUPS AND NO MORE THAN FIVE AMINE NITROGEN ATOMS, AND ALKALI METAL AND QUATERNARY AMMONIUM SALTS OF SAID POLYAMINES.
References Cited (Backward Citations)
US2413857A
Cited
US2558728A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-01-25 | 1963-07-27 | 1964-01-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-01-25 | 1967-07-27 | 1968-01-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-01-25 | 1971-07-27 | 1972-01-26 | $7700.00 | Window Closed / Lapsed |