Patent US3333656A successfully refreshed from Google Patents.
US3333656A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fibrous acoustical panel with impregnant in rear body portion
Assignee: Owens Corning
•
Filing: 1964-10-29
•
Granted: 1967-08-01
•
Expires: 1984-10-29
Abstract
No abstract record available.
Inventors
- 👤 Richard F Shannon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 14:43
CPC Classifications
E; E04; E04B; E04B9/00; E04B9/04; E04B9/045; E04B1/00; E04B1/62; E04B1/74; E04B1/82; E04B1/84; E04B1/86; E04B2001/8245; E04B2001/8457; E04B2001/8461
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
77 words
AN ACOUSTICAL PANEL HAVING A BODY OF BONDED MINERAL FIBERS, KERFS IN THE SIDE EDGES OF THE PANEL FOR RECEIVING HANGER ELEMENTS, A FIRE RESISTING IMPREGNANT OF MINERAL MATERIAL IN PARTICULATE FORM EXTENDING DOWN INTO THE PANEL FROM THE REAR SIDE THEREOF PAST THE KERFS IN THE EDGES BUT EXTENDING SHORT OF THE FRONT SIDE OF THE PANEL, SAID IMPREGNANT HAVING SUFFICIENT STIFFENING EFFECT TO HOLD THE BODY OF BONDED MINERAL FIBERS AGAINST DEFORMATION UNDER HIGH HEAT.
Claim 2
Dependent Claim
77 words
AN ACOUSTICAL PANEL HAVING A BODY OF BONDED MINERAL FIBERS, KERFS IN THE SIDE EDGES OF THE PANEL FOR RECEIVING HANGER ELEMENTS, A FIRE RESISTING IMPREGNANT OF MINERAL MATERIAL IN PARTICULATE FORM EXTENDING DOWN INTO THE PANEL FROM THE REAR SIDE THEREOF PAST THE KERFS IN THE EDGES BUT EXTENDING SHORT OF THE FRONT SIDE OF THE PANEL, SAID IMPREGNANT HAVING SUFFICIENT STIFFENING EFFECT TO HOLD THE BODY OF BONDED MINERAL FIBERS AGAINST DEFORMATION UNDER HIGH HEAT.
References Cited (Backward Citations)
CA686876A
Cited
US3017318A
Cited
US1568415A
Cited
US1941769A
Cited
GB390189A
Cited
US1950420A
Cited
US2004686A
Cited
US2785099A
Cited
US2787723A
Cited
US2946158A
Cited
US3077413A
Cited
US3009829A
Cited
US3015626A
Cited
US3111188A
Cited
US3103444A
Cited
US3246063A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-07-31 | 1971-01-30 | 1971-08-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-07-31 | 1975-01-30 | 1975-08-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-07-31 | 1979-01-30 | 1979-08-01 | $7700.00 | Window Closed / Lapsed |