US3669638A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of producing bonded randomly oriented glass fiber mats and batts
Assignee: Owens Corning
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Filing: 1968-12-11
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Granted: 1972-06-13
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Expires: 1988-12-11
Abstract
Abstract THE METHOD OF PRODUCING BONDED RANDOMLY ORIENTED GLASS FIBER MATS AND BATTS WHEREIN THE BINDER IS APPLIED TO THE GLASS FIBERS OF THE MATS OR BATTS IN A GEL THICKENED STATE. THE GEL THICKENED BINDER CAN BE SPRAYED INTO AN AIR STREAM WHICH CARRIES THE GLASS FIBERS TO A FORAMINOUS COLLECTION SURFACE. THE GLOBULES OF GEL ARE CAUGHT AND RETAINED BY THE FIBERS GATHERED ON THE COLLECTION SURFACE SO THAT LITTLE BINDER LEAVES WITH THE EXITING AIR STREAM. THE IMPROVED METHOD REDUCES AIR POLLUTION, IMPROVES BINDER TRANSFER EFFICIENTS, AND THE STRENGTH OF THE FINISHED BONED MAT.
Inventors
- 👤 Robert Wong
- 👤 Homer G Hill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 19:30
CPC Classifications
C; C03; C03C; C03C25/00; C03C25/10; C03C25/12; C03C25/14
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-06-13 | 1975-12-13 | 1976-06-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-13 | 1979-12-13 | 1980-06-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-13 | 1983-12-13 | 1984-06-13 | $7700.00 | Window Closed / Lapsed |