Patent US2770459A successfully refreshed from Google Patents.
Patent US3774393A successfully refreshed from Google Patents.
US3774393A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of generating power
Assignee: EIDP Inc
•
Filing: 1971-08-17
•
Granted: 1973-11-27
•
Expires: 1991-08-17
Abstract
Abstract Hydrochlorofluorobenzenes defined by C6HaClbFc wherein a is 1 to 3, b is 2 to 4 and c is 1 to 3 with a + b + c 6 and a + b 3 to 5, and mixtures thereof can be used to generate power in a Rankine cycle engine. The compounds are surprisingly thermally stable and have low toxicity.
Inventors
- 👤 M Bechtold
- 👤 C Tullock
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 14:51
CPC Classifications
F; F01; F01K; F01K25/00; F01K25/08; C; C07; C07C; C07C17/00; C07C17/093; C07C17/20; C07C17/202; C07C17/208; C09; C09K; C09K5/00; C09K5/02; C09K5/04
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
22 words
The method of claim 1 wherein a is 1 to 2 b is 3 to 4 and c is 1 to 2.
Claim 2
Dependent Claim
16 words
The method of claim 2 wherein said working substance consists essentially of mixed isomers of trichlorodifluorobenzene.
Claim 3
Dependent Claim
28 words
The method of claim 2 wherein the working substance is subjected to centrifugal force during the steps of heating and condensing and is recycled by said centrifugal force.
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) | 1976-11-26 | 1977-05-28 | 1977-11-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-11-26 | 1981-05-28 | 1981-11-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-11-26 | 1985-05-28 | 1985-11-27 | $7700.00 | Window Closed / Lapsed |