Patent US2870689A successfully refreshed from Google Patents.
US2870689A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of producing strip material
Assignee: Individual
•
Filing: 1952-12-04
•
Granted: 1959-01-27
•
Expires: 1972-12-04
Abstract
No abstract record available.
Inventors
- 👤 Helen E Brennan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 17:18
CPC Classifications
H; H01; H01M; H01M4/00; H01M4/02; H01M4/04; B; B29; B29C; B29C70/00; B29C70/04; B29C70/28; B29C70/40; B29C70/50; B29C70/504; B29C70/508; H01M50/00; H01M50/40; H01M50/403; H01M50/409; H01M50/431; H01M50/44; H01M50/443; Y; Y02; Y02E; Y02E60/00; Y02E60/10; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24355; Y10T428/24372; Y10T428/24413; Y10T428/249921; Y10T428/249953; Y10T428/24996; Y10T428/249981
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
63 words
A METHOD OF CONTINUOUSLY MAKING A FIBROUS STRIP OR THE LIKE COMPRISING CONTINUOUSLY SUCTION-DEPOSITING DIELECTRIC FIBERS FROM A FLUID SUSPENSION THEREOF TO ACCRETE A CONTINUOUS POROUS MAT ON A FORMER ADVANCING THROUGH THE SLURRY, AND SPRAYING A PARTICULATE POROUS METAL LAYER ON THE FIBERS THEREON TO BOND THE FIBERS TOGETHER INTO A SELF-SUPPORTING STRIP AND REMOVING SAID SO BONDED STRIP FROM SAID FORMER.
References Cited (Backward Citations)
US322034A
Cited
US1039413A
Cited
US1351374A
Cited
GB310625A
Cited
US1748998A
Cited
US1829187A
Cited
US1856475A
Cited
US1945173A
Cited
US2143406A
Cited
GB483769A
Cited
US2118762A
Cited
US2280789A
Cited
US2328198A
Cited
US2374214A
Cited
US2504744A
Cited
US2547371A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-01-26 | 1962-07-28 | 1963-01-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-01-26 | 1966-07-28 | 1967-01-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-01-26 | 1970-07-28 | 1971-01-27 | $7700.00 | Window Closed / Lapsed |