US2979814A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Joining of graphite members
Assignee: Horizons Inc
•
Filing: 1957-12-04
•
Granted: 1961-04-18
•
Expires: 1977-12-04
Abstract
No abstract record available.
Inventors
- 👤 Morris A Steinberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:11
CPC Classifications
C; C04; C04B; C04B37/00; C04B37/003; C04B37/006; C04B35/00; C04B35/622; C04B35/64; C04B35/645; C04B2235/00; C04B2235/65; C04B2235/656; C04B2235/6562; C04B2235/658; C04B2237/00; C04B2237/02; C04B2237/12; C04B2237/121; C04B2237/30; C04B2237/32; C04B2237/36; C04B2237/363; C04B2237/50; C04B2237/60; C04B2237/66; Y; Y10; Y10T; Y10T428/00; Y10T428/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
121 words
A METHOD OF BONDING GRAPHITE TO GRAPHITE BY MEANS OF A METAL-FREE BOND CONSISTING ESSENTIALLY OF CARBON WHICH COMPRISES: BRINGING AT LEAST TWO PIECES OF GRAPHITE TO BE JOINED INTO ABUTTING RELATIONSHIP WITH A FINELY DIVIDED BONDING MATERIAL SELECTED FROM THE GROUP CONSISTING OF ALUMINUM, BERYLLIUM, MAGNESIUM, AND ZIRCONIUM DISPOSED AT THE INTERFACE CONSTITUTING THE JOINT, HEATING THE REGION ADJACENT THE JOINT TO A TEMPERATURE SUFFICIENT TO FORM A CARBIDE BY REACTION BETWEEN SAID FINELY DIVIDED SOLID AND THE GRAPHITE PIECES BEING JOINED, FURTHER HEATING THE REGION ADJACENT THE JOINT TO A TEMPERATURE SUFFICIENT TO DECOMPOSE THE CARBIDE AND TO BOIL AWAY THE RESULTING ELEMENTAL METAL RELEASED BY DECOMPOSITION OF THE CARBIDE, THEREBY PRODUCING A JOINT FORMED ENTIRELY OF CARBONACEOUS MATERIAL.
Claim 2
Independent Claim
121 words
A METHOD OF BONDING GRAPHITE TO GRAPHITE BY MEANS OF A METAL-FREE BOND CONSISTING ESSENTIALLY OF CARBON WHICH COMPRISES: BRINGING AT LEAST TWO PIECES OF GRAPHITE TO BE JOINED INTO ABUTTING RELATIONSHIP WITH A FINELY DIVIDED BONDING MATERIAL SELECTED FROM THE GROUP CONSISTING OF ALUMINUM, BERYLLIUM, MAGNESIUM, AND ZIRCONIUM DISPOSED AT THE INTERFACE CONSTITUTING THE JOINT, HEATING THE REGION ADJACENT THE JOINT TO A TEMPERATURE SUFFICIENT TO FORM A CARBIDE BY REACTION BETWEEN SAID FINELY DIVIDED SOLID AND THE GRAPHITE PIECES BEING JOINED, FURTHER HEATING THE REGION ADJACENT THE JOINT TO A TEMPERATURE SUFFICIENT TO DECOMPOSE THE CARBIDE AND TO BOIL AWAY THE RESULTING ELEMENTAL METAL RELEASED BY DECOMPOSITION OF THE CARBIDE, THEREBY PRODUCING A JOINT FORMED ENTIRELY OF CARBONACEOUS MATERIAL.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-04-17 | 1964-10-17 | 1965-04-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-04-17 | 1968-10-17 | 1969-04-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-04-17 | 1972-10-17 | 1973-04-18 | $7700.00 | Window Closed / Lapsed |