US3575691A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for continuously preparing and mounting wet filtration specimens
Assignee: Individual
•
Filing: 1967-03-14
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Granted: 1971-04-20
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Expires: 1987-03-14
Abstract
Abstract THE INVENTION CONSISTS IN AN APPARATUS FOR AUTOMATICLLY FILTERING A SUCCESSION OF LIQUID/SOLID MIXTURES SO AS TO DEPOSIT THE SOLID COMPONENT OF EACH MIXTURE ON AN INDIVIDUAL DISCRETE PORTION OF THE LENGTH OF A CONTINUOUS STRIP OF FILTER MEDIUM AND THEREAFTER RETAINING THE SOLIDS ON THE STRIP BY ADHESIVELY SECURING A PROTECTIVE FILM TO AT LEAST ONE FACE OF THE STRIP. THE PROTECTED STRIP WITH THE SOLIDS RETAINED IN THE ORDER OF THEIR DEPOSITION MAY THEREAFTER BE EXAMINED AND/OR STORED (E.G. IN REELED FORM) WITHOUT RISK OF DISTURBING THE SOLIDS.
Inventors
- 👤 Alan Pollard
- 👤 Alfred G Wright
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 17:18
CPC Classifications
G; G01; G01N; G01N1/00; G01N1/28; G01N1/40; G01N1/4077; B; B01; B01D; B01D33/00; B01D33/04; G01N15/00; G01N15/06; G01N15/0606; G01N15/0618; G01N23/00; G01N23/22; G01N23/223; G01N35/00; G01N35/00009; G01N2223/00; G01N2223/07; G01N2223/076
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-04-19 | 1974-10-19 | 1975-04-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-04-19 | 1978-10-19 | 1979-04-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-04-19 | 1982-10-19 | 1983-04-20 | $7700.00 | Window Closed / Lapsed |