US3365097A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Repair patch for lined vessels
Assignee: Dow Chemical Co
•
Filing: 1966-02-25
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Granted: 1968-01-23
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Expires: 1986-02-25
Abstract
No abstract record available.
Inventors
- 👤 Chase Raymond Burt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:39
CPC Classifications
B; B01; B01J; B01J19/00; B01J19/0053; B01J19/0073; B01D; B01D3/00; B01D3/14; B01D3/32; B01J19/02; F; F27; F27D; F27D1/00; F27D1/04; F27D1/06; F27D1/08; B01J2219/00; B01J2219/02; B01J2219/0204; B01J2219/0209; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49718; Y10T29/49732; Y10T29/49734; Y10T29/49735
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
45 words
IN A COVER OF METAL TO BE AFFIXED OVER AND CONFORMING WITH A RESIN FILLING IN COMPLETION OF A PATCH OF A BREAK IN A REFRACTORY LINING OF A REFRACTORY LINED ARTICLE, THE IMPROVEMENT THAT THE SHAPE OF SAID COVER DEFINES A ESSENTIALLY CENTRAL UMBO.
Claim 2
Dependent Claim
45 words
IN A COVER OF METAL TO BE AFFIXED OVER AND CONFORMING WITH A RESIN FILLING IN COMPLETION OF A PATCH OF A BREAK IN A REFRACTORY LINING OF A REFRACTORY LINED ARTICLE, THE IMPROVEMENT THAT THE SHAPE OF SAID COVER DEFINES A ESSENTIALLY CENTRAL UMBO.
References Cited (Backward Citations)
US2833631A
Cited
US3236407A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-01-22 | 1971-07-24 | 1972-01-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-01-22 | 1975-07-24 | 1976-01-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-01-22 | 1979-07-24 | 1980-01-23 | $7700.00 | Window Closed / Lapsed |