US2945772A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cellulosic sponge
Assignee: EIDP Inc
•
Filing: 1958-01-24
•
Granted: 1960-07-19
•
Expires: 1978-01-24
Abstract
No abstract record available.
Inventors
- 👤 James George Martin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 13:25
CPC Classifications
C; C08; C08J; C08J9/00; C08J2301/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
59 words
A CELLULOSIC SPONGE IMPREGNATED WITH 0.1-3.0%, BASED ON THE DRY WEIGHT OF CELLULOSE, OF A MIXTURE OF A ROSIN AMINE AND A QUATERNARY AMMONIUM HALIDE, THE HALOGEN IN THE QUATERNARY AMMONIUM HALIDE BEING A MEMBER OF THE GROUP CONSISTING OF CHLORINE AND BROMINE, THE QUATERNARY AMMONIUM HALIDE COMPRISING 15-75% OF SAID MIXTURE AND THE ROSIN AMINE COMPRISING THE REMAINDER.
Claim 2
Dependent Claim
59 words
A CELLULOSIC SPONGE IMPREGNATED WITH 0.1-3.0%, BASED ON THE DRY WEIGHT OF CELLULOSE, OF A MIXTURE OF A ROSIN AMINE AND A QUATERNARY AMMONIUM HALIDE, THE HALOGEN IN THE QUATERNARY AMMONIUM HALIDE BEING A MEMBER OF THE GROUP CONSISTING OF CHLORINE AND BROMINE, THE QUATERNARY AMMONIUM HALIDE COMPRISING 15-75% OF SAID MIXTURE AND THE ROSIN AMINE COMPRISING THE REMAINDER.
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) | 1963-07-19 | 1964-01-18 | 1964-07-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-07-19 | 1968-01-18 | 1968-07-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-07-19 | 1972-01-18 | 1972-07-19 | $7700.00 | Window Closed / Lapsed |