Patent US3928830A successfully refreshed from Google Patents.
Patent US2979813A successfully refreshed from Google Patents.
US2979813A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Joining of graphite members
Assignee: Horizons Inc
•
Filing: 1956-09-28
•
Granted: 1961-04-18
•
Expires: 1976-09-28
Abstract
No abstract record available.
Inventors
- 👤 Morris A Steinberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 16:49
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; C04B2237/30; C04B2237/32; C04B2237/34; C04B2237/343; C04B2237/50; C04B2237/60; C04B2237/66
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
110 words
A METHOD OF FORMING A GRAPHITE BOND BETWEEN GRAPHITE MEMBERS WHICH COMPRISES: ASSEMBLING AT LEAST TWO GRAPHITE MEMBERS HAVING A COMMON SURFACE ABOUT A CARBIDE-FORMING METAL SELECTED FROM THE GROUP CONSISTING OF TITANIUM, ZIRCONIUM, HALFNIUM, VANADIUM, NIOBIUM, TANTALUM, CHROMIUM, MOLYBDENUM, AND TUNGSTEN, SUBJECTING THE REGION ADJACENT SAID CARBIDE-FORMING MATERIAL TO A TEMPERATURE BETWEEN 1750*C. AND 2500*C. AND SUFFICIENT TO FORM A CARBIDE OF SAID METAL, MAINTAINING SAID REGION AT SAID TEMPERATURE FOR A TIME SUFFICIENT TO PERMIT THE VOLATILIZATION OF A PORTION OF SAID CARBIDEFORMING METAL, AND COOLING SAID REGION, WHEREBY GRAPHITE PRECIPITATES PERPENDICULAR TO SAID COMMON SURFACE AND FORMS A SUBSTANTIAL PORTION OF THE RESULTING MATERIAL JOINING SAID MEMBERS.
Claim 2
Independent Claim
110 words
A METHOD OF FORMING A GRAPHITE BOND BETWEEN GRAPHITE MEMBERS WHICH COMPRISES: ASSEMBLING AT LEAST TWO GRAPHITE MEMBERS HAVING A COMMON SURFACE ABOUT A CARBIDE-FORMING METAL SELECTED FROM THE GROUP CONSISTING OF TITANIUM, ZIRCONIUM, HALFNIUM, VANADIUM, NIOBIUM, TANTALUM, CHROMIUM, MOLYBDENUM, AND TUNGSTEN, SUBJECTING THE REGION ADJACENT SAID CARBIDE-FORMING MATERIAL TO A TEMPERATURE BETWEEN 1750*C. AND 2500*C. AND SUFFICIENT TO FORM A CARBIDE OF SAID METAL, MAINTAINING SAID REGION AT SAID TEMPERATURE FOR A TIME SUFFICIENT TO PERMIT THE VOLATILIZATION OF A PORTION OF SAID CARBIDEFORMING METAL, AND COOLING SAID REGION, WHEREBY GRAPHITE PRECIPITATES PERPENDICULAR TO SAID COMMON SURFACE AND FORMS A SUBSTANTIAL PORTION OF THE RESULTING MATERIAL JOINING SAID MEMBERS.
References Cited (Backward Citations)
US227370A
Cited
US968949A
Cited
US2093390A
Cited
US2195314A
Cited
US2431975A
Cited
US2570248A
Cited
US2650943A
Cited
US2686958A
Cited
US2776472A
Cited
US2739375A
Cited
US2813921A
Cited
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 |