US3348994A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High temperature fibrous board
Assignee: Owens Corning
•
Filing: 1963-09-26
•
Granted: 1967-10-24
•
Expires: 1983-09-26
Abstract
No abstract record available.
Inventors
- 👤 Willis M Rees
- 👤 Richard F Shannon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 12:42
CPC Classifications
C; C04; C04B; C04B38/00; C04B38/0006; C03; C03C; C03C13/00; C03C13/006; C03C25/00; C03C25/10; C03C25/465; C03C25/47; C04B26/00; C04B26/02; Y; Y10; Y10S; Y10S428/00; Y10S428/92; Y10S428/921; Y10T; Y10T428/00; Y10T428/249921
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
165 words
A FIBROUS BOARD PRODUCT COMPRISING: (A) A MASS OF INTERMESHED GLASS FIBERS DISPOSED IN AN OPEN, NON-WOVEN ARRANGEMENT, AND, (B) A BINDER COMPOSITION PRESENT AS A COATING ON THE SURFACES OF SAID FIBERS, SAID BINDER COMPOSITION COMPRISING: (1) A HARDENED SYNTHETIC RESINOUS BINDER MATERIAL BONDING SAID GLASS FIBERS TO ONE ANOTHER AT POINTS OF CONTACT, (2) A DEVITRIFYING AGENT FOR SAID GLASS FIBERS SELECTED FROM THE GROUP CONSISTING OF FIBROUS CALCIUM AND MAGNESIUM SILICATES DISPERSED IN SAID BINDER COMPOSITION AND IN SURFACE CONTACT WITH SAID GLASS FIBERS, AND (3) A DEVITRIFICATION ACCELERAOR SELECTED FROM THE GROUP CONSISTING OF THE OXIDES, HYDROXIDES, CARBONATES, AND SILICATES OF TITANIUM, ZIRCONIM, CHOMIUM, ALUMINUM AND MAGNESIUM, AND MIXTURES THEREOF, DISPERSED IN SAID BINDER COMPOSITION AND IN SURFACE CONTACT WITH SAID GLASS FIBERS, SAID DEVITRIFYING AGENT AND DEVITRIFICATION ACCELERATOR BEING PRESENT IN THE BINDER COMPOSITION IN A RATIO BY WEIGHT RANGING FROM ABOUT 1:1 TO ABOUT 19:1, SUBSTANTIALLY ALL OF SAID DEVITRIFYING AGENT AND DEVITRIFICATION ACCELERATOR BEING FINER THAN 200 MESH.
Claim 2
Dependent Claim
165 words
A FIBROUS BOARD PRODUCT COMPRISING: (A) A MASS OF INTERMESHED GLASS FIBERS DISPOSED IN AN OPEN, NON-WOVEN ARRANGEMENT, AND, (B) A BINDER COMPOSITION PRESENT AS A COATING ON THE SURFACES OF SAID FIBERS, SAID BINDER COMPOSITION COMPRISING: (1) A HARDENED SYNTHETIC RESINOUS BINDER MATERIAL BONDING SAID GLASS FIBERS TO ONE ANOTHER AT POINTS OF CONTACT, (2) A DEVITRIFYING AGENT FOR SAID GLASS FIBERS SELECTED FROM THE GROUP CONSISTING OF FIBROUS CALCIUM AND MAGNESIUM SILICATES DISPERSED IN SAID BINDER COMPOSITION AND IN SURFACE CONTACT WITH SAID GLASS FIBERS, AND (3) A DEVITRIFICATION ACCELERAOR SELECTED FROM THE GROUP CONSISTING OF THE OXIDES, HYDROXIDES, CARBONATES, AND SILICATES OF TITANIUM, ZIRCONIM, CHOMIUM, ALUMINUM AND MAGNESIUM, AND MIXTURES THEREOF, DISPERSED IN SAID BINDER COMPOSITION AND IN SURFACE CONTACT WITH SAID GLASS FIBERS, SAID DEVITRIFYING AGENT AND DEVITRIFICATION ACCELERATOR BEING PRESENT IN THE BINDER COMPOSITION IN A RATIO BY WEIGHT RANGING FROM ABOUT 1:1 TO ABOUT 19:1, SUBSTANTIALLY ALL OF SAID DEVITRIFYING AGENT AND DEVITRIFICATION ACCELERATOR BEING FINER THAN 200 MESH.
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) | 1970-10-23 | 1971-04-24 | 1971-10-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-10-23 | 1975-04-24 | 1975-10-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-10-23 | 1979-04-24 | 1979-10-24 | $7700.00 | Window Closed / Lapsed |