Patent US2795440A successfully refreshed from Google Patents.
US2795440A
Expired / Lapsed
US
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Joint and method of uniting carbon bodies
Assignee: Union Carbide Corp
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Filing: 1954-03-23
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Granted: 1957-06-11
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Expires: 1974-03-23
Abstract
No abstract record available.
Inventors
- 👤 Clayton O Holycross
- 👤 Samuel H S Raub
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 07:43
CPC Classifications
C; C04; C04B; C04B37/00; C04B37/003; C04B37/005; C04B2235/00; C04B2235/65; C04B2235/656; C04B2235/6567; C04B2237/00; C04B2237/02; C04B2237/04; C04B2237/30; C04B2237/32; C04B2237/36; C04B2237/363; C04B2237/50; C04B2237/52; C04B2237/76; C04B2237/765; Y; Y10; Y10S; Y10S285/00; Y10S285/923; Y10T; Y10T156/00; Y10T156/10; Y10T156/1052; Y10T156/1062; Y10T156/1066
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
30 words
A CARBONACEOUS JOINT COMPRISING TUBULAR-SHAPED CARBON AND GRAPHITE ARTICLES HAVING COMPLEMENTARILY PROFILED TAPERED ENDS, SAID PROFILING EING IN A SPATULATE SHAPE, PROVIDING A CLEARANCE OF 0.002 INCH TO 0.006 INCH
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) | 1960-06-10 | 1960-12-10 | 1961-06-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-06-10 | 1964-12-10 | 1965-06-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-06-10 | 1968-12-10 | 1969-06-11 | $7700.00 | Window Closed / Lapsed |