Patent US5976172A successfully refreshed from Google Patents.
Patent US3238368A successfully refreshed from Google Patents.
US3238368A
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Absorption analysing apparatus with means for reflecting short wavelength ultraviolet radiation along measuring and reference optical paths
Assignee: MCPHERSON INSTRUMENT CORP
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Filing: 1963-03-04
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Granted: 1966-03-01
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Expires: 1983-03-04
Abstract
No abstract record available.
Inventors
- 👤 Paul M Mcpherson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:55
CPC Classifications
G; G01; G01N; G01N21/00; G01N21/17; G01N21/25; G01N21/31; G01N21/33
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
169 words
SPECTROMETRIC APPARATUS FOR USE AT A SHORT WAVELENGTHS COMPRISING: AN EVACUABLE CHAMBER, SAID CHAMBER HAVING AN APERTURE THROUGH WHICH A BEAM OF RADIATION CAN BE ADMITTED; MEANS DEFINING A MEASURING OPTICAL PATH AND A REFERENCE OPTICAL PATH, SAID PATHS FORMING AN ACUTE ANGLE AND BEING ORIENTED SO THAT THE AXIS OF A BEAM OF RADIATION ADMITTED THROUGH SAID APERTURE BISECTS SAID ANGLE; A WEDGE-SHAPED MIRROR ELEMENT LOCATED IN THE PATH OF A BEAM OF RADIATION ADMITTED THROUGH SAID APERTURE AND OSCILLATABLE BETWEEN TWO POSITIONS, THE POINT OF THE WEDGE BEING TRAVERSABLE ACROSS THE WIDTH OF A BEAM OF RADIATION ADMITTED THROUGH SAID APERTURE, THE FIRST POSITION BEING SUCH THAT A BEAM OF RADIATION ADMITTED THROUGH SAID APERTURE IS DIVERTED WITH A SINGLE REFLECTION AT GRAVING INCIDENCE DOWN SAID MEASURING OPTICAL PATH AND THE SECOND POSITION BEING SUCH THAT THE BEAM IS DIVERTED WITH A SINGLE REFLECTION AT EQUALLY GRAZING INCIDENCE DOWN SAID REFERENCE OPTICAL PATH; AND, IN EACH OF SAID PATHS, MEANS RESPONSIVE TO THE INTENSITY OF RADIATION PRESENT.
Claim 2
Dependent Claim
169 words
SPECTROMETRIC APPARATUS FOR USE AT A SHORT WAVELENGTHS COMPRISING: AN EVACUABLE CHAMBER, SAID CHAMBER HAVING AN APERTURE THROUGH WHICH A BEAM OF RADIATION CAN BE ADMITTED; MEANS DEFINING A MEASURING OPTICAL PATH AND A REFERENCE OPTICAL PATH, SAID PATHS FORMING AN ACUTE ANGLE AND BEING ORIENTED SO THAT THE AXIS OF A BEAM OF RADIATION ADMITTED THROUGH SAID APERTURE BISECTS SAID ANGLE; A WEDGE-SHAPED MIRROR ELEMENT LOCATED IN THE PATH OF A BEAM OF RADIATION ADMITTED THROUGH SAID APERTURE AND OSCILLATABLE BETWEEN TWO POSITIONS, THE POINT OF THE WEDGE BEING TRAVERSABLE ACROSS THE WIDTH OF A BEAM OF RADIATION ADMITTED THROUGH SAID APERTURE, THE FIRST POSITION BEING SUCH THAT A BEAM OF RADIATION ADMITTED THROUGH SAID APERTURE IS DIVERTED WITH A SINGLE REFLECTION AT GRAVING INCIDENCE DOWN SAID MEASURING OPTICAL PATH AND THE SECOND POSITION BEING SUCH THAT THE BEAM IS DIVERTED WITH A SINGLE REFLECTION AT EQUALLY GRAZING INCIDENCE DOWN SAID REFERENCE OPTICAL PATH; AND, IN EACH OF SAID PATHS, MEANS RESPONSIVE TO THE INTENSITY OF RADIATION PRESENT.
Claim 3
Dependent Claim
33 words
APPARATUS FOR MEASURING THE ABSORPTION OF ULTRAVIOLET RADIATION BY A SAMPLE COMPRISING: AN EVACUABLE CHAMBER, SAID CHAMBER HAVING AN APERTURE THROUGH WHICH A BEAM OF RADIATION CAN BE ADMITTED; A SAMPLE CELL; A
Claim 4
Dependent Claim
33 words
APPARATUS FOR MEASURING THE ABSORPTION OF ULTRAVIOLET RADIATION BY A SAMPLE COMPRISING: AN EVACUABLE CHAMBER, SAID CHAMBER HAVING AN APERTURE THROUGH WHICH A BEAM OF RADIATION CAN BE ADMITTED; A SAMPLE CELL; A
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) | 1969-02-28 | 1969-08-30 | 1970-03-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-28 | 1973-08-30 | 1974-03-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-28 | 1977-08-30 | 1978-03-01 | $7700.00 | Window Closed / Lapsed |