US3870748A
Expired / Lapsed
US
⏱️ 0.0 years remaining
2-hydroxy-1,1,2,3,3-pentahydro-perfluoroalkyl derivatives
Assignee: Daikin Industries Ltd
•
Filing: 1972-10-24
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Granted: 1975-03-11
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Expires: 1992-10-24
Abstract
Abstract A 2-hydroxy-1,1,2,3,3-pentahydroperfluoroalkyl derivative of either one of the formulae:
Inventors
- 👤 Atsuo Katsushima
- 👤 Iwao Hisamoto
- 👤 Shoshin Fukui
- 👤 Chiaki Maeda
- 👤 Akitoshi Iwatani
- 👤 Takahisa Kato
- 👤 Masayuki Nagai
- 👤 Hiroyuki Shinkai
- 👤 Masayuki Asaoka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 02:20
CPC Classifications
D; D06; D06M; D06M15/00; D06M15/19; D06M15/21; D06M15/263; D06M15/277; C; C07; C07D; C07D303/00; C07D303/02; C07D303/08; C08; C08F; C08F8/00; C08F8/18; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/30; C08G18/38; C08G18/3802; C08G18/3804; C08G18/3812; C08G18/40; C08G18/42; C08G18/46; C08G18/4607; C08G18/67; C08G18/68; C08G63/00; C08G63/68; C08G65/00; C08G65/02; C08G65/04; C08G65/22; C08G65/223; C08G65/226; D06M13/00; D06M13/10; D06M13/184; D06M13/203; D06M13/207; D06M13/21; D06M13/213; D06M13/224; D06M13/236; D06M13/322; D06M13/325; D06M13/328; D06M13/33; D06M13/368; D06M13/372; D06M13/402
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
46 words
A compound of the formula: (RfCH2CH(OH)CH2OOC)mQ wherein Rf is a perfluoroalkyl group, an omega -hydro-perfluoroalkyl group or an omega -chloro-perfluoroalkyl group having 4 to 20 carbon atoms, Q is -(CH2)p-, -CH CH-, or -C6H4-, in which p is an integer of 1-4 and m is 2.
Claim 2
Dependent Claim
46 words
A compound of the formula: (RfCH2CH(OH)CH2OOC)mQ wherein Rf is a perfluoroalkyl group, an omega -hydro-perfluoroalkyl group or an omega -chloro-perfluoroalkyl group having 4 to 20 carbon atoms, Q is -(CH2)p-, -CH CH-, or -C6H4-, in which p is an integer of 1-4 and m is 2.
Claim 3
Dependent Claim
5 words
A COMPOUND OF THE FORMULA:
Claim 4
Dependent Claim
5 words
A COMPOUND OF THE FORMULA:
Claim 5
Dependent Claim
11 words
The compound of claim 1 in which Q is -CH2 CH2-.
Claim 6
Dependent Claim
10 words
The compound of claim 1 in which Q is -C6H4-.
Claim 7
Dependent Claim
17 words
The compound of claim 1 in which Q is -(CH2)p- wherein p is an integer of 1-4.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-03-10 | 1978-09-09 | 1979-03-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-10 | 1982-09-09 | 1983-03-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-10 | 1986-09-09 | 1987-03-11 | $7700.00 | Window Closed / Lapsed |