Patent US3221558A successfully refreshed from Google Patents.
US3221558A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sampling method and apparatus
Assignee: Kennecott Corp
•
Filing: 1963-05-31
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Granted: 1965-12-07
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Expires: 1983-05-31
Abstract
No abstract record available.
Inventors
- 👤 Milton A Lagergren
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 13:03
CPC Classifications
G; G01; G01N; G01N1/00; G01N1/02; G01N1/04; G01N1/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
50 words
A METHOD OF OBTAINING AN UNDISTURBED SAMPLE OF MOSITURE-BEARING MATERIAL COMPRISING THE STEPS OF: SINKING A HOLLOW SAMPLER INTO SAID MATERIAL A DESIRED DEPTH; REDUCING THE TEMPERATURE WITHIN SAID SAMPLER UNTIL THE WATER IN A SECTION OF MATERIAL SURROUNDING THE SAMPLER IS FROZEN, THE RELATIVE POSITIONS OF THE SOLID PARTICLES
Claim 2
Independent Claim
50 words
A METHOD OF OBTAINING AN UNDISTURBED SAMPLE OF MOSITURE-BEARING MATERIAL COMPRISING THE STEPS OF: SINKING A HOLLOW SAMPLER INTO SAID MATERIAL A DESIRED DEPTH; REDUCING THE TEMPERATURE WITHIN SAID SAMPLER UNTIL THE WATER IN A SECTION OF MATERIAL SURROUNDING THE SAMPLER IS FROZEN, THE RELATIVE POSITIONS OF THE SOLID PARTICLES
References Cited (Backward Citations)
US2331227A
Cited
US2865204A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-12-06 | 1969-06-07 | 1969-12-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-12-06 | 1973-06-07 | 1973-12-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-12-06 | 1977-06-07 | 1977-12-07 | $7700.00 | Window Closed / Lapsed |