Patent US3215849A successfully refreshed from Google Patents.
US3215849A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spectrophotometer with movable cuvette unit to isolate a single wavelength
Assignee: Individual
•
Filing: 1962-09-05
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Granted: 1965-11-02
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Expires: 1982-09-05
Abstract
No abstract record available.
Inventors
- 👤 Harry H Golden
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 19:52
CPC Classifications
G; G01; G01J; G01J3/00; G01J3/28; G01J3/42; G01N; G01N21/00; G01N21/17; G01N21/25; G01N21/251
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
112 words
A SPECTROPHOTOMETER INCLUDING AN EXCITER LAMP, AN OPTICAL UNIT WITH AN ENTRANCE SLIT, A LENS AND A GRATING SPACED FROM THE LAMP IN THE ORDER NAMED, A CUVETTE UNIT COMPOSED OF AN EXIT SLIT, CUVETTE WELL AND PHOTO-CONDUCTIVE CELL MOVABLE LATERALLY OF SAID LAMP AND OPTICAL UNIT TO ISOLATE A VERY NARROW BEAM OF MONOCHROMATIC LIGHT FROM A SPECTRUM DIRECTED TO THE EXIT SLIT, AND A CAM LYING IN A HORIZONTAL PLANE AND ADAPTED UPON ROTATION BY A SHAFT TO BEAR AGAINST SAID CUVETTE UNIT TO MOVE THE SAME AS STATED, SAID CUVETTE UNIT SUPPORTING THE EXIT SLIT, CUVETTE WELL AND PHOTO-CONDUCTIVE CELL TO RENDER THEM MOVABLE AS A UNIT AS STATED.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-11-01 | 1969-05-03 | 1969-11-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-01 | 1973-05-03 | 1973-11-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-01 | 1977-05-03 | 1977-11-02 | $7700.00 | Window Closed / Lapsed |