US3050812A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of producing vitreous clay products
Assignee: Individual
•
Filing: 1960-06-06
•
Granted: 1962-08-28
•
Expires: 1980-06-06
Abstract
No abstract record available.
Inventors
- 👤 Felder John Lawson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 03:42
CPC Classifications
C; C04; C04B; C04B33/00; C04B33/32; C04B33/323
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
76 words
THE PROCESS FOR FORMING NA VITREOUS PRODUCT FROM A GAS-CONTAINING ARGILLACEOUS MATERIAL COMPRISING THE STEPS OF HEATING THE RAW MATERIAL TO A BLOATED CONDITION BELOW THE TEMPERATURE OF FUSION, DISCHARGING THE HEATED MATERIAL INTO A MOLD, THE MOLD BEING AT A TEMPERATURE BELOW THE TEMPERATURE OF FUSION OF THE MATERIAL, AND APPLYING A UNIFORM PRESSURE TO THE MATERIAL IN THE MOLD WHILE CONFINING THE GASES THEREIN UNTIL THE MATERIAL IS CONVERTED THROUGHOUT INTO A FUSED CONDITION.
Claim 2
Dependent Claim
76 words
THE PROCESS FOR FORMING NA VITREOUS PRODUCT FROM A GAS-CONTAINING ARGILLACEOUS MATERIAL COMPRISING THE STEPS OF HEATING THE RAW MATERIAL TO A BLOATED CONDITION BELOW THE TEMPERATURE OF FUSION, DISCHARGING THE HEATED MATERIAL INTO A MOLD, THE MOLD BEING AT A TEMPERATURE BELOW THE TEMPERATURE OF FUSION OF THE MATERIAL, AND APPLYING A UNIFORM PRESSURE TO THE MATERIAL IN THE MOLD WHILE CONFINING THE GASES THEREIN UNTIL THE MATERIAL IS CONVERTED THROUGHOUT INTO A FUSED CONDITION.
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) | 1965-08-27 | 1966-02-26 | 1966-08-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-08-27 | 1970-02-26 | 1970-08-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-08-27 | 1974-02-26 | 1974-08-28 | $7700.00 | Window Closed / Lapsed |