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 14:47
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.
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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 |