Patent US3191876A successfully refreshed from Google Patents.
US3191876A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for treating paper stocks
Assignee: Individual
•
Filing: 1962-11-01
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Granted: 1965-06-29
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Expires: 1982-11-01
Abstract
No abstract record available.
Inventors
- 👤 Bidwell Howard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 19:40
CPC Classifications
D; D21; D21B; D21B1/00; D21B1/04; D21B1/12; D21B1/30; D21B1/34; D21B1/345
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
62 words
A VITRIFIED BONDED ROTOR STRUCTURE FOR USE IN PROCESSING WATERBORNE STOCK CONSISTING OF, A POROUS ROTOR BODY OF HARD-MATERIAL NON-METALLIC GRANULES PERMANENTLY BONDED TOGETHER AND HAVING AN EXPOSED COARSE GRANULAR STOCK PROCESSING OUTER SURFACE, AND A REENFORCING EPOXY RESIN FILLER INCORPORATED INTO THE VOIDS OF THE INTERIOR BORE STRUCTURE OF SAID ROTOR BODY IN THE REGION OF MAXIMUM STRESSES FOR RESISTING FRACTURE.
Claim 2
Dependent Claim
62 words
A VITRIFIED BONDED ROTOR STRUCTURE FOR USE IN PROCESSING WATERBORNE STOCK CONSISTING OF, A POROUS ROTOR BODY OF HARD-MATERIAL NON-METALLIC GRANULES PERMANENTLY BONDED TOGETHER AND HAVING AN EXPOSED COARSE GRANULAR STOCK PROCESSING OUTER SURFACE, AND A REENFORCING EPOXY RESIN FILLER INCORPORATED INTO THE VOIDS OF THE INTERIOR BORE STRUCTURE OF SAID ROTOR BODY IN THE REGION OF MAXIMUM STRESSES FOR RESISTING FRACTURE.
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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) | 1968-06-28 | 1968-12-28 | 1969-06-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-06-28 | 1972-12-28 | 1973-06-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-06-28 | 1976-12-28 | 1977-06-29 | $7700.00 | Window Closed / Lapsed |