US4346235A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluorine-containing compounds
Assignee: Daikin Industries Ltd
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Filing: 1980-06-10
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Granted: 1982-08-24
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Expires: 2000-06-10
Abstract
Abstract A novel fluorine-containing compound of the formula R.sub.1 --A--R.sub.2 wherein A is ##STR1## R 1 and R 2 are each hydrogen or R 3 OOC--CH 2 ) n , while R 1 and R 2 may not be hydrogen at the same time; X is hydrogen or halogen; R 3 is hydrogen or a lower alkyl group; m is an integer of 1 to 5; and n is an integer of 4 to 11, and a process for preparing the same.
Inventors
- 👤 Noboru Sonoda
- 👤 Shinji Murai
- 👤 Kazuhisa Takii
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 22:46
CPC Classifications
C; C07; C07C; C07C55/00; C07C55/32; C07C53/00; C07C53/15; C07C53/19; C07C53/21; C07C57/00; C07C57/52; Y; Y10; Y10S; Y10S516/00; Y10S516/01; Y10S516/06
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
45 words
A fluorine-containing compound of the formula R.sub.1 --A--R.sub.2 wherein A is ##STR103## R 1 and R 2 are each hydrogen or HOOC--CH 2 ) 5 , while R 1 and R 2 may not be hydrogen at the same time; X is hydrogen or halogen.
Claim 2
Dependent Claim
45 words
A fluorine-containing compound of the formula R.sub.1 --A--R.sub.2 wherein A is ##STR103## R 1 and R 2 are each hydrogen or HOOC--CH 2 ) 5 , while R 1 and R 2 may not be hydrogen at the same time; X is hydrogen or halogen.
Claim 3
Dependent Claim
13 words
A fluorine-containing compound as defined in claim 1 in which A is ##STR104##
Claim 4
Dependent Claim
22 words
A fluorine-containing compound as defined in claim 1 in which R 1 and R 2 are both HOOC--CH 2 ) 5 .
References Cited (Backward Citations)
US2411158A
Cited
US2559628A
Cited
US2811551A
Cited
US2870200A
Cited
US2951051A
Cited
US3819668A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-08-23 | 1986-02-22 | 1986-08-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-08-23 | 1990-02-22 | 1990-08-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-08-23 | 1994-02-22 | 1994-08-24 | $7700.00 | Window Closed / Lapsed |