US3177759A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for the spectrum examination of materials
Assignee: Barnes Engineering Co
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Filing: 1961-10-04
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Granted: 1965-04-13
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Expires: 1981-10-04
Abstract
No abstract record available.
Inventors
- 👤 Jr Paul A Willks
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 11:53
CPC Classifications
G; G02; G02B; G02B3/00; G02B3/0006; G02B3/0037; G02B3/005; G01; G01N; G01N21/00; G01N21/17; G01N21/55; G01N21/552; G02B5/00; G02B5/04; G02B5/045; G01J; G01J3/00; G01J3/02; G01J3/0205; G01J3/0213
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
121 words
AN APPARATUS FOR SPECTRUM EXAMINATION OF MATERIALS COMPRISING IN COMBINATION (A) A RELATIVELY THIN, UNITARY, ATTENUATED TOTAL REFLECTION PLATE OF AN INFRARED TRANSMITTING MATERIAL HAVING TWO SPACED OPPOSING SURFACES, ONE OF SAID SURFACES BEING OPTICALLY FLAT AND THE OTHER OF SAID SURFACES HAVING FORMED THHEREON A REPETITIVE SERIES OF LONGITUDINALLY CONTIGUOUS, PARALLEL, TRIANGULAR PRISMATIC SURFACES, (B) A SAMPLE WHOSE SPECTRAL CHARACTERISTICS ARE TO BE EXAMINED, POSITIONED IN CONTACT WITH THE OPTICALLY FLAT SURFACE OF SAID PLATE, (C) MEANS FOR APPLYING RADIATION DIRECTLY ON THE PRISMATIC SURFACE OF SAID PLATE AT AN ANGLE WHICH PRODUCES ATTENUATED TOTAL REFLECTED RADIATION FROM THE OPTICALLY FLAT SURFACE, AND (D) UTILIZATION MEANS POSITIONED FOR RECEIVING AND SPECTRALLY ANALYZING THE ATTENUATED TOTAL REFLECTED RADIATION FROM SAID PLATE.
Claim 2
Independent Claim
121 words
AN APPARATUS FOR SPECTRUM EXAMINATION OF MATERIALS COMPRISING IN COMBINATION (A) A RELATIVELY THIN, UNITARY, ATTENUATED TOTAL REFLECTION PLATE OF AN INFRARED TRANSMITTING MATERIAL HAVING TWO SPACED OPPOSING SURFACES, ONE OF SAID SURFACES BEING OPTICALLY FLAT AND THE OTHER OF SAID SURFACES HAVING FORMED THHEREON A REPETITIVE SERIES OF LONGITUDINALLY CONTIGUOUS, PARALLEL, TRIANGULAR PRISMATIC SURFACES, (B) A SAMPLE WHOSE SPECTRAL CHARACTERISTICS ARE TO BE EXAMINED, POSITIONED IN CONTACT WITH THE OPTICALLY FLAT SURFACE OF SAID PLATE, (C) MEANS FOR APPLYING RADIATION DIRECTLY ON THE PRISMATIC SURFACE OF SAID PLATE AT AN ANGLE WHICH PRODUCES ATTENUATED TOTAL REFLECTED RADIATION FROM THE OPTICALLY FLAT SURFACE, AND (D) UTILIZATION MEANS POSITIONED FOR RECEIVING AND SPECTRALLY ANALYZING THE ATTENUATED TOTAL REFLECTED RADIATION FROM SAID PLATE.
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) | 1968-04-12 | 1968-10-12 | 1969-04-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-04-12 | 1972-10-12 | 1973-04-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-04-12 | 1976-10-12 | 1977-04-13 | $7700.00 | Window Closed / Lapsed |