US3376106A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Boehmite alumina products
Assignee: Sinclair Refining Co
•
Filing: 1965-04-28
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Granted: 1968-04-02
•
Expires: 1985-04-28
Abstract
No abstract record available.
Inventors
- 👤 John L Gring
- 👤 Mooi John
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 08:24
CPC Classifications
B; B01; B01J; B01J21/00; B01J21/02; B01J21/04; B01J21/16; C; C01; C01F; C01F7/00; C01F7/02; C01F7/34; C01P; C01P2002/00; C01P2002/60; C01P2004/00; C01P2004/01; C01P2004/03; C01P2004/50; C01P2004/60; C01P2004/61; C01P2004/62; C01P2006/00; C01P2006/10; C01P2006/12; C01P2006/14; C01P2006/16; C01P2006/17
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
72 words
A NOVEL BOEHMITE ALUMINA PRODUCT WITH PARTICLES OF IRREGULAR EDGES, A PORE STRUCTURE TOTALLING AT LEAST ABOUT 0.5 CC. PER GRAM IN PORES LARGER THAN 80 A. IN SIZE, AN AVERAGE CRYSTALLITE SIZE GREATER THAN ABOUT 40 A. UP TO ABOUT 200 A. BY X-RAY DIFFRACTION, AND COMPOSED OF A NON-HOMOGENEOUS INTEGRAL AGGREGATION OF POLYCRYSTALLINE BOEHMITE SUB-UNITS, SAID PARTICLES HAVING A LARGEST DIMENSION OF AT LEAST ABOUT 500 A. BY ELECTRON MICROSCOPE.
Claim 2
Dependent Claim
72 words
A NOVEL BOEHMITE ALUMINA PRODUCT WITH PARTICLES OF IRREGULAR EDGES, A PORE STRUCTURE TOTALLING AT LEAST ABOUT 0.5 CC. PER GRAM IN PORES LARGER THAN 80 A. IN SIZE, AN AVERAGE CRYSTALLITE SIZE GREATER THAN ABOUT 40 A. UP TO ABOUT 200 A. BY X-RAY DIFFRACTION, AND COMPOSED OF A NON-HOMOGENEOUS INTEGRAL AGGREGATION OF POLYCRYSTALLINE BOEHMITE SUB-UNITS, SAID PARTICLES HAVING A LARGEST DIMENSION OF AT LEAST ABOUT 500 A. BY ELECTRON MICROSCOPE.
Claim 3
Dependent Claim
12 words
THE PRODUCT OF CLAIM 1 WHEREIN THE PRODUCT IS PLATELET IN FORM.
Claim 4
Dependent Claim
19 words
THE PRODUCT OF CLAIM 1 WHEREIN THE PRODUCT IS GRANULAR IN APPEARANCE AND THE PARTICLES ARE ACICULAR IN FORM.
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) | 1971-04-02 | 1971-10-02 | 1972-04-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-04-02 | 1975-10-02 | 1976-04-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-04-02 | 1979-10-02 | 1980-04-02 | $7700.00 | Window Closed / Lapsed |