US2915475A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fibrous alumina monohydrate and its production
Assignee: EIDP Inc
•
Filing: 1958-12-29
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Granted: 1959-12-01
•
Expires: 1978-12-29
Abstract
No abstract record available.
Inventors
- 👤 Bugosh John
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:53
CPC Classifications
D; D21; D21H; D21H17/00; D21H17/63; D21H17/67; D21H17/675; C; C04; C04B; C04B35/00; C04B35/622; C04B35/62227; C04B35/62231; C04B35/62236; D06; D06M; D06M11/00; D06M11/32; D06M11/36; D06M11/45; D21H21/00; D21H21/14; D21H21/16; Y; Y10; Y10S; Y10S264/00; Y10S264/17; Y10S264/19; Y10T; Y10T428/00; Y10T428/29; Y10T428/2904
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
48 words
FIBROUS ALUMINA IN THE FORM OF FIBRILS HAVING AN AVERAGE LENGTH IN THE RANGE FROM 100 TO 700 MILLIMICRONS, THE REMAINING AVERAGE DIMENSIONS BEING IN THE RANGE FROM 3 TO 10 MILLIMICRONS, THE AXIAL RATIO BEING FROM 50:1 TO 150:1 AND THE PRODUCT HAVING THE FOLLOWING PHYSICAL PROPERTIES:
Claim 2
Dependent Claim
48 words
FIBROUS ALUMINA IN THE FORM OF FIBRILS HAVING AN AVERAGE LENGTH IN THE RANGE FROM 100 TO 700 MILLIMICRONS, THE REMAINING AVERAGE DIMENSIONS BEING IN THE RANGE FROM 3 TO 10 MILLIMICRONS, THE AXIAL RATIO BEING FROM 50:1 TO 150:1 AND THE PRODUCT HAVING THE FOLLOWING PHYSICAL PROPERTIES:
References Cited (Backward Citations)
US2733205A
Cited
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Cited
US1953201A
Cited
US2373198A
Cited
US2739076A
Cited
US2798049A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-11-30 | 1963-06-01 | 1963-12-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-11-30 | 1967-06-01 | 1967-12-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-11-30 | 1971-06-01 | 1971-12-01 | $7700.00 | Window Closed / Lapsed |