US3828098A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sulfur substituted bis(polyfluoroalkoxyalkyl carboxylic acids)and derivatives thereof
Assignee: Honeywell International Inc
•
Filing: 1972-10-02
•
Granted: 1974-08-06
•
Expires: 1992-10-02
Abstract
Abstract DICARBOXYLIC ACIDS, THEIR ALKALI METAL SALTS AND LOWER ALKYL ESTERS WHICH CONTAINS TWO POLYFLUOROALKOXYALKYL CARBOXY MOIETIES JOINED BY A-S-OR A-S-ALKYLENE -SCROSSLINK. THESE COMPOUNDS ARE USEFUL AS SURFACTANTS, AS WATER REPELLENT AGENTS, AS CORROSION RESISTANT AGENTS AND DROPWISE CONDENSATION PROMOTERS.
Inventors
- 👤 K Gilleo
- 👤 E Jones
- 👤 E Tajkowski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 02:33
CPC Classifications
D; D06; D06M; D06M13/00; D06M13/244; D06M13/248; D06M13/252; C; C07; C07C; C07C323/00; C07C59/00; C07C59/125; C07C59/135; Y; Y10; Y10S; Y10S516/00; Y10S516/01; Y10S516/02
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1977-08-05 | 1978-02-04 | 1978-08-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-08-05 | 1982-02-04 | 1982-08-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-08-05 | 1986-02-04 | 1986-08-06 | $7700.00 | Window Closed / Lapsed |