Patent US4648882A successfully refreshed from Google Patents.
Patent US3192990A successfully refreshed from Google Patents.
US3192990A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Film type liquid concentration apparatus
Assignee: Individual
•
Filing: 1962-09-04
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Granted: 1965-07-06
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Expires: 1982-09-04
Abstract
No abstract record available.
Inventors
- 👤 Natelson Samuel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 12:01
CPC Classifications
G; G01; G01N; G01N1/00; G01N1/28; G01N1/40
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
58 words
A METHOD OF EVAPORATING A LIQUID TO YIELD A SOLID SUBSTANCE FROM A SAMPLE CAPABLE TO BEING ANALYZED FOR TRACE ELEMENTS; COMPRISING THE STEPS OF DEFINING A SPOT SHAPE USEFUL IN THE FURTHER PROCESSING OF THE SAMPLE, ON A FLAT ABSORBENT MEDIUM, HEATING THE OUTER EDGE OF THIS MEDIUM, COOLING THAT PORTION OF SAID MEDIUM UNDER SAID DEFINED
Claim 2
Independent Claim
58 words
A METHOD OF EVAPORATING A LIQUID TO YIELD A SOLID SUBSTANCE FROM A SAMPLE CAPABLE TO BEING ANALYZED FOR TRACE ELEMENTS; COMPRISING THE STEPS OF DEFINING A SPOT SHAPE USEFUL IN THE FURTHER PROCESSING OF THE SAMPLE, ON A FLAT ABSORBENT MEDIUM, HEATING THE OUTER EDGE OF THIS MEDIUM, COOLING THAT PORTION OF SAID MEDIUM UNDER SAID DEFINED
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) | 1968-07-05 | 1969-01-04 | 1969-07-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-07-05 | 1973-01-04 | 1973-07-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-07-05 | 1977-01-04 | 1977-07-06 | $7700.00 | Window Closed / Lapsed |