US3139355A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for making a fibrous cellulose and/or nitrocellulose product
Assignee: Atlantic Research Corp
•
Filing: 1962-01-22
•
Granted: 1964-06-30
•
Expires: 1982-01-22
Abstract
No abstract record available.
Inventors
- 👤 Fries Myron G De
- 👤 John N Godfrey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 00:09
CPC Classifications
D; D21; D21H; D21H17/00; D21H17/20; D21H17/33; D21H17/34; D21H17/36; Y; Y10; Y10S; Y10S102/00; Y10S102/70
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
82 words
IN A PROCESS FOR MAKING, A FELTED, FIBROUS PRODUCT COMPRISING FIBERS SELECTED FROM THE GROUP CONSISTING OF CELLULOSE, NITROCELLULOSE, AND MIXTURES THEREOF, THE IMPROVEMENT COMPRISING IMPREGNATING SAID FIBERS WITH AN AQUEOUS OIL-IN-WATER TYPE EMULSION COMPRISING A SOLUTION OF POLYVINYL FORMAL IN A VOLATILE ORGANIC SOLVENT HAVING A MAXIMUM SOLUBILITY IN WATER OF ABOUT 15% BY WEIGHT AT 20*C., DISPERSED IN WATER, SAID POLYVINYL FORMAL COMPRISING ABOUT 2% TO 50% BY WEIGHT OF SAID FIBERS, AND THEN DRYING SAID IMPREGNATED MIXTURE OF FIBERS.
Claim 2
Dependent Claim
82 words
IN A PROCESS FOR MAKING, A FELTED, FIBROUS PRODUCT COMPRISING FIBERS SELECTED FROM THE GROUP CONSISTING OF CELLULOSE, NITROCELLULOSE, AND MIXTURES THEREOF, THE IMPROVEMENT COMPRISING IMPREGNATING SAID FIBERS WITH AN AQUEOUS OIL-IN-WATER TYPE EMULSION COMPRISING A SOLUTION OF POLYVINYL FORMAL IN A VOLATILE ORGANIC SOLVENT HAVING A MAXIMUM SOLUBILITY IN WATER OF ABOUT 15% BY WEIGHT AT 20*C., DISPERSED IN WATER, SAID POLYVINYL FORMAL COMPRISING ABOUT 2% TO 50% BY WEIGHT OF SAID FIBERS, AND THEN DRYING SAID IMPREGNATED MIXTURE OF FIBERS.
References Cited (Backward Citations)
US2011914A
Cited
GB542854A
Cited
US2484023A
Cited
US2482237A
Cited
US2666038A
Cited
US2876136A
Cited
US2991168A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-06-30 | 1967-12-30 | 1968-06-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-06-30 | 1971-12-30 | 1972-06-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-06-30 | 1975-12-30 | 1976-06-30 | $7700.00 | Window Closed / Lapsed |