Patent US2870055A successfully refreshed from Google Patents.
US2870055A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for forming weftless ribbon
Assignee: Eastman Kodak Co
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Filing: 1955-11-14
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Granted: 1959-01-20
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Expires: 1975-11-14
Abstract
No abstract record available.
Inventors
- 👤 Charles H Coney
- 👤 William L Rumgay
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 18:56
CPC Classifications
D; D06; D06M; D06M15/00; D06M15/01; D06M15/03; D06M15/05; D06M15/07; B; B29; B29C; B29C70/00; B29C70/04; B29C70/06; B29C70/10; B29C70/16; B29C70/20; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24132
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
54 words
A PROCESS FOR FORMING A WEFTLESS RIBBON COMPRISING BONDING TOGETHER THE YARN OF A WARP CONSISTING OF PARALLEL YARNS OF CELLULOSE ACETATE TO FORM A SELF-SUPPORTING WEB, BY MEANS OF A COATING COMPRISING 15-20 PERCENT CELLULOSE ACETATE BUTYRATE, 46-64 PERCENT TOLUENE AND 10-20 PERCENT ETHANOL BY WEIGHT AND DRYING AT ELEVATED TEMPERATURES UNDER TENSION.
References Cited (Backward Citations)
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US2407548A
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US2631957A
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US2547047A
Cited
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Cited
US2734012A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-01-19 | 1962-07-21 | 1963-01-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-01-19 | 1966-07-21 | 1967-01-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-01-19 | 1970-07-21 | 1971-01-20 | $7700.00 | Window Closed / Lapsed |