US3168602A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Baking tar bonded brick
Assignee: —
•
Filing: —
•
Granted: 1965-02-02
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Expires: 1982-02-02
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:41
CPC Classifications
C; C04; C04B; C04B35/00; C04B35/515; C04B35/52; C04B35/528; C04B35/532; C04B35/01; C04B35/013; C04B35/66; F; F27; F27D; F27D1/00; F27D1/0003; F27D1/0006; C04B2235/00; C04B2235/02; C04B2235/30; C04B2235/48; C04B2235/70; C04B2235/74; C04B2235/77; C04B2235/94; Y; Y10; Y10S; Y10S264/00; Y10S264/20; Y10S264/43
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
52 words
IN THE METHOD OF BAKING A PREVIOUSLY FORMED TAR BONDED REFRACTORY SHAPE, THE IMPROVEMENT COMPRISING HEATING SAID SHAPE AT A RATE OF ABOUT 25* TO 100*F. PER HOUR TO A TEMPERATURE WITHIN THE RANGE OF ABOUT 400* TO 1000*F. TO BAKE SAID SHAPE WHILE RETAINING VAPORS FROM SAID TAR IN CONTACT THEREWITH.
Claim 2
Dependent Claim
52 words
IN THE METHOD OF BAKING A PREVIOUSLY FORMED TAR BONDED REFRACTORY SHAPE, THE IMPROVEMENT COMPRISING HEATING SAID SHAPE AT A RATE OF ABOUT 25* TO 100*F. PER HOUR TO A TEMPERATURE WITHIN THE RANGE OF ABOUT 400* TO 1000*F. TO BAKE SAID SHAPE WHILE RETAINING VAPORS FROM SAID TAR IN CONTACT THEREWITH.
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) | 1968-02-02 | 1968-08-03 | 1969-02-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-02-02 | 1972-08-03 | 1973-02-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-02-02 | 1976-08-03 | 1977-02-02 | $7700.00 | Window Closed / Lapsed |