US3804769A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Solvent compositions
Assignee: Imperial Chemical Industries Ltd
•
Filing: 1972-02-25
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Granted: 1974-04-16
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Expires: 1992-02-25
Abstract
Abstract A SOLVENT COMPOSITION SUITABLE FOR USE IN THE REMOVAL OF FLUX FROM CIRCUIT BOARDS WHICH COMPRISES AN AXEOTROPICFORMING MIXTURE OF TRICHLORO-PENTAFLUOROPROPANE WITH AN ALKANOL CONTANING 1 TO 4 CARBON ATOMS IN THE MOLECULE.
Inventors
- 👤 D Lomas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:03
CPC Classifications
C; C11; C11D; C11D7/00; C11D7/50; C11D7/5036; C11D7/5068; C11D7/5077; C11D7/5081; C23; C23G; C23G5/00; C23G5/02; C23G5/028; C23G5/02809; C23G5/02812
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-04-15 | 1977-10-15 | 1978-04-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-04-15 | 1981-10-15 | 1982-04-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-04-15 | 1985-10-15 | 1986-04-16 | $7700.00 | Window Closed / Lapsed |