Patent US2998326A successfully refreshed from Google Patents.
US2998326A
Expired / Lapsed
US
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Cleaning and sizing of fabrics
Assignee: HERBERT A ELLENBOGEN
•
Filing: 1956-04-04
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Granted: 1961-08-29
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Expires: 1976-04-04
Abstract
No abstract record available.
Inventors
- 👤 Herbert A Ellenbogen
- 👤 Bleier Emre
- 👤 Sirota Jules
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 18:19
CPC Classifications
D; D06; D06L; D06L1/00; D06L1/02; D06L1/04; D06F; D06F43/00; D06F43/007
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
97 words
PROCESS OF DRY CLEANING AND SIZING OF FABRICS AND IMPROVING THE RECOVERY OF SOLVENT USED IN SUCH PROCESS COMPRISING APPLYING TO THE FABRIC AN 0.001 TO 0.5 WEIGHT PERCENT DRY CLEANING SOLVENT SOLUTION OF A COPOLYMER OF VINYL ACETATE AND FROM 30 TO 50 MOL PERCENT OF A POLYMERIZABLE MONOMER CONSISTING OF AN ALIPHATIC ESTER IN WHICH ONE OF THE ALIPHATIC RADICALS OF SAID ESTER IS AN ALKENYL RADICAL HAVING 2 TO 4 CARBON ATOMS AND THE OTHER ALIPHATIC RADICAL IS SATURATED AND CONTAINS 8 TO 17 CARBON ATOMS, SAID COPOLYMER HAVING AT LEAST 5% SOLUBILITY IN
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-08-28 | 1965-02-27 | 1965-08-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-08-28 | 1969-02-27 | 1969-08-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-08-28 | 1973-02-27 | 1973-08-29 | $7700.00 | Window Closed / Lapsed |