US3873215A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Radiometer
Assignee: United States Department of the Air Force
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Filing: 1973-09-20
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Granted: 1975-03-25
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Expires: 1993-09-20
Abstract
Abstract A radiometer for detecting and measuring radiant electromagnetic energy which comprises a pH meter in combination with a light sensitive porphyrin-quinone solution. Chlorophyl a and b, pheophytin, hematoporphyrin, bacteriochlorophyll, and zinc tetraphenylporphin can be utilized as the porphyrin component while hydroquininone and benzoquininone can be employed as the quinone component.
Inventors
- 👤 Kenneth P Quinlan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 02:59
CPC Classifications
G; G01; G01J; G01J1/00; G01J1/48; G01J1/50
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
48 words
A SYSTEM FOR DETECTING AND MASURING RADIANT ELECTROMAGNETIC ENERGY COMPRISING A MEANS CONTAINING A LIGHT SENSITIVE SOLUTION COMPOSED OF A SOLVENT MIXTURE OF A PORPHYRIN AND A QUINOE AND A MEANS FOR MEASURING PH INCLUDING A GLASS ELECTRODE POSITIONED WITHIN AND IN CONTACT WITH SAID LIGHT SENSITIVE SOLUTION.
Claim 2
Independent Claim
48 words
A SYSTEM FOR DETECTING AND MASURING RADIANT ELECTROMAGNETIC ENERGY COMPRISING A MEANS CONTAINING A LIGHT SENSITIVE SOLUTION COMPOSED OF A SOLVENT MIXTURE OF A PORPHYRIN AND A QUINOE AND A MEANS FOR MEASURING PH INCLUDING A GLASS ELECTRODE POSITIONED WITHIN AND IN CONTACT WITH SAID LIGHT SENSITIVE SOLUTION.
Claim 3
Dependent Claim
24 words
A system in accordance with claim 1 wherein said light sensitive solution is composed of a mixture of chlorophyl and hydroquinone dissolved in methanol.
Claim 4
Dependent Claim
24 words
A system in accordance with claim 1 wherein said light sensitive solution is composed of a mixture of chlorophyl and benzoquininone dissolved in methanol.
Claim 5
Dependent Claim
25 words
A system in accordance with claim 1 wherein said light sensitive solution is composed of a mixtUre of zinc tetraphenylporphin and benzoquinone disolved in methanol.
References Cited (Backward Citations)
US2483299A
Cited
US2700736A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-03-24 | 1978-09-23 | 1979-03-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-24 | 1982-09-23 | 1983-03-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-24 | 1986-09-23 | 1987-03-25 | $7700.00 | Window Closed / Lapsed |