Patent US2714622A successfully refreshed from Google Patents.
US2714622A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for fiberizing refractory materials
Assignee: Unifrax I LLC
•
Filing: 1953-03-03
•
Granted: 1955-08-02
•
Expires: 1973-03-03
Abstract
No abstract record available.
Inventors
- 👤 John C Mcmullen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 17:25
CPC Classifications
C; C03; C03B; C03B37/00; C03B37/01; C03B37/06
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
59 words
THE METHOD FOR RELEASING A UNIFORM STEADY STEAM OF MOLTEN REFRACTORY MATERIAL AT THE CORRECT TEMPERATURE FOR SUBSEQUENT FIBERIZING COMPRISING APPLYING BY ARCHEATING A REGULATED AMOUNT OF HEAT TO THE MOLTEN MAORIFICE, RELEASING THE MOLTEN MATERIAL THROUGH SAID OREFICE, COOLING SAID ORIFICE A REGULATED AMOUNT, AND FORMING A LAYER OF SOLIDIFIED REFRACTORY MATERIAL ON THE SURFACES OF SAID ORIFICE.
References Cited (Backward Citations)
US469454A
Cited
US617748A
Cited
US686836A
Cited
US1458522A
Cited
US2014615A
Cited
US2165318A
Cited
US2181030A
Cited
US2186718A
Cited
US2188927A
Cited
US2257767A
Cited
US2215982A
Cited
US2303657A
Cited
US2335135A
Cited
US2557834A
Cited
US2649487A
Cited
US2686821A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-08-01 | 1959-01-31 | 1959-08-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-08-01 | 1963-01-31 | 1963-08-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-08-01 | 1967-01-31 | 1967-08-02 | $7700.00 | Window Closed / Lapsed |