US3179526A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Refractory bonding mortar
Assignee: Harbison Walker Refractories Co
•
Filing: 1962-03-05
•
Granted: 1965-04-20
•
Expires: 1982-03-05
Abstract
No abstract record available.
Inventors
- 👤 James L Dolph
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:41
CPC Classifications
C; C04; C04B; C04B28/00; C04B28/34; C04B28/342; C04B2111/00; C04B2111/00474; C04B2111/00637; C04B2111/0087; C04B2111/00879; C04B2111/20; C04B2111/28
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
58 words
A WET MORTAR FOR USE IN JOINING REFRACTORY SHAPES CONSISTING ESSENTIALLY OF 18 TO 20 PERCENT, BASED ON THE WEIGHT OF SOLIDS IN THE REMAINDER, OF 75 PERCENT PHOSPHORIC ACID AND THE REMAINDER SUBSTANTIALLY ALL A MEMBER SELECTED FROM THE GROUP CONSISTING OF HIGH ALUMINA MATERIALS AND ZIRCON, FREE OF VITRIFIABLE MATERIAL, SAID ACID BEING A WET ACID.
Claim 2
Dependent Claim
58 words
A WET MORTAR FOR USE IN JOINING REFRACTORY SHAPES CONSISTING ESSENTIALLY OF 18 TO 20 PERCENT, BASED ON THE WEIGHT OF SOLIDS IN THE REMAINDER, OF 75 PERCENT PHOSPHORIC ACID AND THE REMAINDER SUBSTANTIALLY ALL A MEMBER SELECTED FROM THE GROUP CONSISTING OF HIGH ALUMINA MATERIALS AND ZIRCON, FREE OF VITRIFIABLE MATERIAL, SAID ACID BEING A WET ACID.
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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) | 1968-04-19 | 1968-10-19 | 1969-04-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-04-19 | 1972-10-19 | 1973-04-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-04-19 | 1976-10-19 | 1977-04-20 | $7700.00 | Window Closed / Lapsed |