Patent US3015850A successfully refreshed from Google Patents.
US3015850A
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Assignee: —
•
Filing: —
•
Granted: 1962-01-09
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Expires: 1979-01-09
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:26
CPC Classifications
C; C04; C04B; C04B35/00; C04B35/71; C04B35/78; C04B35/80; C04B35/83; Y; Y10; Y10S; Y10S264/00; Y10S264/20; Y10S264/36; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31801; Y10T428/31815
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
52 words
IN THE METHOD OF COKING AN ARTICLE COMPOSED OF REFRACTORY GRAINS SELECTED FROM THE CLASS CONSISTING OF DEAD-BURNED MAGNESIA AND A MIXTURE OF DEAD-BURNED MAGNESIA AND DEAD-BURNED DOLOMITE AND BONDED WITH A COAL TAR PITCH; THE IMPROVEMENTS OF APPLYING TO THE ARTICLE A PETROLEUM WAX SELECTED FROM THE CLASS CONSISTING OF PAR-
Claim 2
Dependent Claim
52 words
IN THE METHOD OF COKING AN ARTICLE COMPOSED OF REFRACTORY GRAINS SELECTED FROM THE CLASS CONSISTING OF DEAD-BURNED MAGNESIA AND A MIXTURE OF DEAD-BURNED MAGNESIA AND DEAD-BURNED DOLOMITE AND BONDED WITH A COAL TAR PITCH; THE IMPROVEMENTS OF APPLYING TO THE ARTICLE A PETROLEUM WAX SELECTED FROM THE CLASS CONSISTING OF PAR-
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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) | 1965-01-08 | 1965-07-10 | 1966-01-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-01-08 | 1969-07-10 | 1970-01-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-01-08 | 1973-07-10 | 1974-01-09 | $7700.00 | Window Closed / Lapsed |