US2992999A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dry cleaning solvent containing haloalkyldiphenyl oxide sulfonates
Assignee: Dow Chemical Co
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Filing: 1958-06-23
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Granted: 1961-07-18
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Expires: 1978-06-23
Abstract
No abstract record available.
Inventors
- 👤 Joseph A Smith
- 👤 Alfred F Steinhauer
- 👤 Joseph C Valenta
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 05:51
CPC Classifications
D; D06; D06L; D06L1/00; D06L1/02; D06L1/04; C; C07; C07C; C07C309/00; C10; C10L; C10L1/00; C10L1/10; C10L1/14; C10L1/24; C10L1/2431; C10L1/2437; C11; C11D; C11D1/00; C11D1/02; C11D1/12; C11D1/22; C11D1/24; C11D3/00; C11D3/48; C23; C23F; C23F11/00; C23F11/08; C23F11/10; C23F11/16; C23F11/163
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
31 words
A SUBSTANTIALLY WATER INSOLUBLE DRY CLEANING SOLVENT HAVING DISSOLVED THEREIN FROM ABOUT 0.25 TO 20 PERCENT BY WEIGHT OF A SALT OF AN ALKYLATED HALOGENATED DIARYL OXIDE SULFONATE HAVING THE FORMULA
Claim 2
Dependent Claim
31 words
A SUBSTANTIALLY WATER INSOLUBLE DRY CLEANING SOLVENT HAVING DISSOLVED THEREIN FROM ABOUT 0.25 TO 20 PERCENT BY WEIGHT OF A SALT OF AN ALKYLATED HALOGENATED DIARYL OXIDE SULFONATE HAVING THE FORMULA
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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) | 1964-07-17 | 1965-01-16 | 1965-07-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-07-17 | 1969-01-16 | 1969-07-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-07-17 | 1973-01-16 | 1973-07-18 | $7700.00 | Window Closed / Lapsed |