US3907696A
Expired / Lapsed
US
⏱️ 0.0 years remaining
New heat transfer agents
Assignee: Dow Chemical Co
•
Filing: 1971-05-03
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Granted: 1975-09-23
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Expires: 1991-05-03
Abstract
Abstract New heat transfer agents containing at least three components consisting of by volume 5 to 90% of diphenyl oxide, 5-50% of biphenyl and 5 to 90% of polyphenyl ether having 3 or 4 aromatic nuclei, alkylated biphenyl or diphenyl oxide having 1-4 methyl or ethyl substituents, ethylbenzene oil and mixtures thereof have been discovered.
Inventors
- 👤 Larry L Jackson
- 👤 Walter F Seifert
- 👤 Daniel E Collins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 23:19
CPC Classifications
C; C09; C09K; C09K5/00; C09K5/08; C10; C10M; C10M3/00; C10M2203/00; C10M2203/02; C10M2203/022; C10M2203/024; C10M2203/04; C10M2203/06; C10M2207/00; C10M2207/04; C10M2209/00; C10M2209/02; C10M2209/10; C10M2209/101; C10N; C10N2040/00; C10N2040/08
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
34 words
A COMPOSITION OF MATTER, BY VOLUME, CONSISTING ESSENTIALLY OF ABOUT 30 TO ABOUT 70% OF DI(PHENOXYPHENYL) ETHER, THE REMAINDER BEING ESSENTIALLY DIPHENYL OXIDE AND BIPHENYL PRESENT IN ESSENTIALLY THE PROPORTION OF THEIR EUTECTIC MIXTURE.
Claim 2
Dependent Claim
34 words
A COMPOSITION OF MATTER, BY VOLUME, CONSISTING ESSENTIALLY OF ABOUT 30 TO ABOUT 70% OF DI(PHENOXYPHENYL) ETHER, THE REMAINDER BEING ESSENTIALLY DIPHENYL OXIDE AND BIPHENYL PRESENT IN ESSENTIALLY THE PROPORTION OF THEIR EUTECTIC MIXTURE.
Claim 3
Dependent Claim
26 words
The composition of claim 1 consisting essentially of about 50% by volume of di(phenoxyphenyl) ether, the balance being the eutectic mixture of diphenyl and diphenyl oxide.
References Cited (Backward Citations)
US2170809A
Cited
US1882809A
Cited
US2149789A
Cited
US2172391A
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US2169995A
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US2324784A
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US2933450A
Cited
US3006852A
Cited
US3567783A
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US3475115A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-09-22 | 1979-03-24 | 1979-09-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-09-22 | 1983-03-24 | 1983-09-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-09-22 | 1987-03-24 | 1987-09-23 | $7700.00 | Window Closed / Lapsed |