US3259536A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of fireproofing sheets
Assignee: BASF SE
•
Filing: 1961-08-23
•
Granted: 1966-07-05
•
Expires: 1981-08-23
Abstract
No abstract record available.
Inventors
- 👤 Gaeth Rudolf
- 👤 Schmitt Bernhard
- 👤 Breu Rudolf
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 22:29
CPC Classifications
C; C04; C04B; C04B28/00; C04B28/24; C04B28/26; C08; C08J; C08J5/00; C08J5/12; C08J5/124; Y; Y10; Y10S; Y10S428/00; Y10S428/92; Y10S428/921; Y10T; Y10T442/00; Y10T442/10; Y10T442/102; Y10T442/109; Y10T442/121; Y10T442/20; Y10T442/2631
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
65 words
FIREPROOFING SHEETS HAVING INCREASED THERMAL INSULATING EFFICIENCY WHEN EXPOSED TO HIGH TEMPERATURES WHICH CONSIST ESSENTIALLY OF ALKALI METAL SILICATE SYNTHETIC INORGANIC FIBERS EMBEDDED IN SAID ALKALI MATAL SILICATE, AND WATER, THE AMOUNT OF SAID INORGANIC FIBERS BEING FROM 0.5 TO 60% BY WEIGHT AND THE AMOUNT OF WATER BEING FROM 31.1 TO 80.0% BY WEIGHT, SAID PERCETAGES BEING WITH REFERENCE TO ANHYDROUS ALKALI METAL SILICATE.
Claim 2
Dependent Claim
65 words
FIREPROOFING SHEETS HAVING INCREASED THERMAL INSULATING EFFICIENCY WHEN EXPOSED TO HIGH TEMPERATURES WHICH CONSIST ESSENTIALLY OF ALKALI METAL SILICATE SYNTHETIC INORGANIC FIBERS EMBEDDED IN SAID ALKALI MATAL SILICATE, AND WATER, THE AMOUNT OF SAID INORGANIC FIBERS BEING FROM 0.5 TO 60% BY WEIGHT AND THE AMOUNT OF WATER BEING FROM 31.1 TO 80.0% BY WEIGHT, SAID PERCETAGES BEING WITH REFERENCE TO ANHYDROUS ALKALI METAL SILICATE.
References Cited (Backward Citations)
US2438339A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-07-04 | 1970-01-03 | 1970-07-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-07-04 | 1974-01-03 | 1974-07-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-07-04 | 1978-01-03 | 1978-07-05 | $7700.00 | Window Closed / Lapsed |