Patent US3218457A successfully refreshed from Google Patents.
US3218457A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Specimen holder for electron microscope
Assignee: US Philips Corp
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Filing: 1963-07-30
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Granted: 1965-11-16
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Expires: 1983-07-30
Abstract
No abstract record available.
Inventors
- 👤 Adrianus Cornelis Van Dorsten
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 21:03
CPC Classifications
H; H01; H01J; H01J37/00; H01J37/02; H01J37/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
116 words
A SPECIMEN HOLDER FOR AN ELECTRON MICROSCOPE COMPRISING A DISC-LIKE MEMBER MOVABLE WITHIN AND SUPPORTED BY A WALL OF A HOUSING FOR THE MICROSCOPE, SAID DISC-LIKE MEMBER HAVING AN APERTURE THEREIN FOR THE PASSAGE OF AN ELECTRON BEAM THERETHROUGH, MEANS TO MOUNT A SPECIMEN IN SAID APERTURE OF SAID MEMBER, A BODY OF SEMI-CONDUCTIVE MATERIAL SUPPORTED BY A TRANSVERSE WALL IN SAID HOUSING AND ENGAGEABLY CONTACTING A PORTION OF ONE SURFACE OF SAID MEMBER, AND MEANS TO APPLY A POTENTIAL BETWEEN SAID BODY OF SEMI-CONDUCTIVE MATERIAL AND SAID TRANSVERSE WALL FOR RIGIDLY FIXING THE POSITION OF SAID MEMBER WITHIN SAID HOUSING WHEREBY SAID SPECIMEN IS FIXEDLY POSITIONED IN SAID APERTURE RELATIVE TO SAID BEAM OF ELECTRONS.
Claim 2
Dependent Claim
116 words
A SPECIMEN HOLDER FOR AN ELECTRON MICROSCOPE COMPRISING A DISC-LIKE MEMBER MOVABLE WITHIN AND SUPPORTED BY A WALL OF A HOUSING FOR THE MICROSCOPE, SAID DISC-LIKE MEMBER HAVING AN APERTURE THEREIN FOR THE PASSAGE OF AN ELECTRON BEAM THERETHROUGH, MEANS TO MOUNT A SPECIMEN IN SAID APERTURE OF SAID MEMBER, A BODY OF SEMI-CONDUCTIVE MATERIAL SUPPORTED BY A TRANSVERSE WALL IN SAID HOUSING AND ENGAGEABLY CONTACTING A PORTION OF ONE SURFACE OF SAID MEMBER, AND MEANS TO APPLY A POTENTIAL BETWEEN SAID BODY OF SEMI-CONDUCTIVE MATERIAL AND SAID TRANSVERSE WALL FOR RIGIDLY FIXING THE POSITION OF SAID MEMBER WITHIN SAID HOUSING WHEREBY SAID SPECIMEN IS FIXEDLY POSITIONED IN SAID APERTURE RELATIVE TO SAID BEAM OF ELECTRONS.
References Cited (Backward Citations)
US2939955A
Cited
US2953970A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-11-15 | 1969-05-17 | 1969-11-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-15 | 1973-05-17 | 1973-11-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-15 | 1977-05-17 | 1977-11-16 | $7700.00 | Window Closed / Lapsed |