US2898293A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wax sized paper
Assignee: Gulf Research and Development Co
•
Filing: 1953-12-28
•
Granted: 1959-08-04
•
Expires: 1973-12-28
Abstract
No abstract record available.
Inventors
- 👤 Robert G Capell
- 👤 Philip R Templin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 22:46
CPC Classifications
D; D21; D21H; D21H17/00; D21H17/63; D21H17/67; D21H17/68; D21H17/60
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
33 words
A WAX-SIZED POROUS PAPER THAT CONTAINS FROM 0.25 TO 5.0 PERCENT BY WEIGHT, BASED ON THE TOTAL WEIGHT OF THE WAX-SIZED PAPER, OF AN ADSORBENT MAGNESIUM-SILICATE GEL THAT IS DISTRIBUTED THROUGHOUT THE WAX.
Claim 2
Dependent Claim
33 words
A WAX-SIZED POROUS PAPER THAT CONTAINS FROM 0.25 TO 5.0 PERCENT BY WEIGHT, BASED ON THE TOTAL WEIGHT OF THE WAX-SIZED PAPER, OF AN ADSORBENT MAGNESIUM-SILICATE GEL THAT IS DISTRIBUTED THROUGHOUT THE WAX.
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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) | 1962-08-03 | 1963-02-02 | 1963-08-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-08-03 | 1967-02-02 | 1967-08-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-08-03 | 1971-02-02 | 1971-08-04 | $7700.00 | Window Closed / Lapsed |