US3751780A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ultra sharp diamond edges for ultra thin sectioning and as point cathode
Assignee: Individual
•
Filing: 1971-12-22
•
Granted: 1973-08-14
•
Expires: 1991-12-22
Abstract
Abstract Ultra sharp diamond edge is used for molecular and submolecular sectioning at ultra low temperature and as a high intensity point source for the emission of electrons rons and neutrons.
Inventors
- 👤 H Villalobos
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 21:53
CPC Classifications
G; G01; G01N; G01N3/00; G01N3/58; G01B; G01B15/00; G01B15/04; G01N1/00; G01N1/02; G01N1/04; G01N1/06; H; H01; H01J; H01J37/00; H01J37/26; H01J37/285; G01N1/28; G01N1/42; G01N2001/068; G01N2203/00; G01N2203/02; G01N2203/022; G01N2203/0222; G01N2203/0228; Y; Y10; Y10S; Y10S83/00; Y10S83/915; Y10T; Y10T407/00; Y10T407/28; Y10T83/00; Y10T83/929
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
17 words
A point cathode source according to claim 1, comprising a metallic heating strip associated with said tip.
Claim 2
Dependent Claim
30 words
A point cathode source according to claim 1, comprising a cap having an aperture and positioned over said base with a portion of said diamond tip extending through said aperture.
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) | 1976-08-13 | 1977-02-12 | 1977-08-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-08-13 | 1981-02-12 | 1981-08-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-08-13 | 1985-02-12 | 1985-08-14 | $7700.00 | Window Closed / Lapsed |