US2709653A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of antitarnish wrappers
Assignee: Dominion Cellulose Ltd
•
Filing: 1952-09-19
•
Granted: 1955-05-31
•
Expires: 1972-09-19
Abstract
No abstract record available.
Inventors
- 👤 Marshall Harry Borden
- 👤 Bennett William Russell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 16:56
CPC Classifications
D; D21; D21H; D21H21/00; D21H21/14; D21H21/36; C; C23; C23F; C23F15/00; D06; D06M; D06M11/00; D06M11/68; D06M11/70; D06M11/71; Y; Y10; Y10S; Y10S428/00; Y10S428/922; Y10S428/923
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
24 words
A PROCESS FOR IMPARTING ANTITARNISH PROPERTIES TO FIBROUS MATEIALS WHICH COMPRISES PRECIPITATING ONLY FINELY DIVIDED BASIC COPPER CARBONATE ON THE FIBRES OF THE MATERIAL.
Claim 2
Dependent Claim
24 words
A PROCESS FOR IMPARTING ANTITARNISH PROPERTIES TO FIBROUS MATEIALS WHICH COMPRISES PRECIPITATING ONLY FINELY DIVIDED BASIC COPPER CARBONATE ON THE FIBRES OF THE MATERIAL.
References Cited (Backward Citations)
US1766646A
Cited
US2178606A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-05-30 | 1958-11-29 | 1959-05-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-05-30 | 1962-11-29 | 1963-05-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-05-30 | 1966-11-29 | 1967-05-31 | $7700.00 | Window Closed / Lapsed |