US3705000A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid sample holder for a photometer
Assignee: American Optical Corp
•
Filing: 1971-06-01
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Granted: 1972-12-05
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Expires: 1991-06-01
Abstract
Abstract A unitary liquid sample chamber of injection-molded transparent material defining a collection well and a capillary space.
Inventors
- 👤 John P Guerra
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 07:53
CPC Classifications
B; B01; B01L; B01L3/00; B01L3/50; B01L3/502; B01L3/5027; B01L3/502715; B01L2200/00; B01L2200/06; B01L2200/0642; B01L2300/00; B01L2300/08; B01L2300/0809; B01L2400/00; B01L2400/04; B01L2400/0403; B01L2400/0406; B01L2400/0457
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
143 words
A one-piece liquid sample holder for treatment and photometric analysis of a liquid sample, including: a body member defining an open-topped liquid sample collection well for holding a quantity of a sample liquid, said well being defined by a bottom wall and side walls, a flat capillary chamber defined by a pair of spaced parallel transparent plates, said chamber opening through the walls defining said collection well at a position above the bottom of said well, an overflow conduit in mutual communication with the collection well and the capillary chamber, said well arranged too hold a quantity of liquid sample out of communication with said capillary chamber but to deliver a quantity of said sample to the capillary chamber when the holder is tilted, said capillary chamber effective by capillary action with the liquid sample to draw said sample thereinto for photometric analysis.
Claim 2
Dependent Claim
143 words
A one-piece liquid sample holder for treatment and photometric analysis of a liquid sample, including: a body member defining an open-topped liquid sample collection well for holding a quantity of a sample liquid, said well being defined by a bottom wall and side walls, a flat capillary chamber defined by a pair of spaced parallel transparent plates, said chamber opening through the walls defining said collection well at a position above the bottom of said well, an overflow conduit in mutual communication with the collection well and the capillary chamber, said well arranged too hold a quantity of liquid sample out of communication with said capillary chamber but to deliver a quantity of said sample to the capillary chamber when the holder is tilted, said capillary chamber effective by capillary action with the liquid sample to draw said sample thereinto for photometric analysis.
References Cited (Backward Citations)
US3565537A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-12-05 | 1976-06-05 | 1976-12-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-12-05 | 1980-06-05 | 1980-12-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-12-05 | 1984-06-05 | 1984-12-05 | $7700.00 | Window Closed / Lapsed |