Patent US5611041A successfully refreshed from Google Patents.
Patent US2806800A successfully refreshed from Google Patents.
US2806800A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Boron and carbon containing hard cemented materials and their production
Assignee: Individual
•
Filing: 1955-11-10
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Granted: 1957-09-17
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Expires: 1975-11-10
Abstract
No abstract record available.
Inventors
- 👤 Frank W Glaser
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 19:57
CPC Classifications
C; C22; C22C; C22C29/00; C22C29/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
66 words
A HARD BODY CONSISTING ESSENTIALLY OF FROM 50% TO 80% OF AT LEAST ONE CARBIDE OF A SUBSTANCE SELECTED FROM THE GROUP CONSISTING OF TITANIUM, ZIRCONIUM, MOLYBDENUM, TUNGSTEN, VANADIUM, CHROMIUM, NIOBIUM, TANTALUM AND SILICON AND 20% TO 50% OF BORON, ALL PROPORTIONS BEING BY WEIGHT, THE CARBIDE INGREDIENTS OF SAID BODY BEING BOUND BY A SOLIDIFIED LIQUID PHASE CONTAINING AT LEAST SOME OF ITS BORON CONTENT.
Claim 2
Dependent Claim
66 words
A HARD BODY CONSISTING ESSENTIALLY OF FROM 50% TO 80% OF AT LEAST ONE CARBIDE OF A SUBSTANCE SELECTED FROM THE GROUP CONSISTING OF TITANIUM, ZIRCONIUM, MOLYBDENUM, TUNGSTEN, VANADIUM, CHROMIUM, NIOBIUM, TANTALUM AND SILICON AND 20% TO 50% OF BORON, ALL PROPORTIONS BEING BY WEIGHT, THE CARBIDE INGREDIENTS OF SAID BODY BEING BOUND BY A SOLIDIFIED LIQUID PHASE CONTAINING AT LEAST SOME OF ITS BORON CONTENT.
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) | 1960-09-16 | 1961-03-18 | 1961-09-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-09-16 | 1965-03-18 | 1965-09-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-09-16 | 1969-03-18 | 1969-09-17 | $7700.00 | Window Closed / Lapsed |