US3216167A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Prefabricated panel
Assignee: United States Gypsum Co
•
Filing: 1961-05-22
•
Granted: 1965-11-09
•
Expires: 1981-05-22
Abstract
No abstract record available.
Inventors
- 👤 James R Roberts
- 👤 Vito F Valerio
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:18
CPC Classifications
E; E04; E04C; E04C2/00; E04C2/02; E04C2/04; E04C2/043; E04C2/26; E04C2/284; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24273; Y10T428/24322; Y10T428/24331; Y10T428/24339; Y10T428/24347
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
84 words
A PREFABRICATED STRUCTURAL PANEL COMPRISING TWO GENERALLY PARALLEL SPACED GYPSUM BOARD LAYERS, EACH INCLUDING A BODY OF SET CALCINED GYPSUM COVERED WITH PAPER AND A CORE EXTENDING BETWEEN SAID BOARD LAYERS, ONE OF SAID BOARD LAYERS HAVING OPENINGS THEREIN EXTENDING THROUGH SAID PAPER AT THE INWARDLY DISPOSED SURFACE OF SUCH LAYER AND TERMINATING WITHIN SUCH BOARD LAYER, AND THE OTHER OF SAID BOARD LAYERS HAVING OPENINGS EXTENDING THERETHROUGH, SAID CORE INCLUDING A LAYER OF PERFORATE INSULATION MATERIAL, SAID OPENINGS IN SAID BOARD LAYERS BE-
Claim 2
Dependent Claim
84 words
A PREFABRICATED STRUCTURAL PANEL COMPRISING TWO GENERALLY PARALLEL SPACED GYPSUM BOARD LAYERS, EACH INCLUDING A BODY OF SET CALCINED GYPSUM COVERED WITH PAPER AND A CORE EXTENDING BETWEEN SAID BOARD LAYERS, ONE OF SAID BOARD LAYERS HAVING OPENINGS THEREIN EXTENDING THROUGH SAID PAPER AT THE INWARDLY DISPOSED SURFACE OF SUCH LAYER AND TERMINATING WITHIN SUCH BOARD LAYER, AND THE OTHER OF SAID BOARD LAYERS HAVING OPENINGS EXTENDING THERETHROUGH, SAID CORE INCLUDING A LAYER OF PERFORATE INSULATION MATERIAL, SAID OPENINGS IN SAID BOARD LAYERS BE-
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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) | 1968-11-08 | 1969-05-10 | 1969-11-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-08 | 1973-05-10 | 1973-11-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-08 | 1977-05-10 | 1977-11-09 | $7700.00 | Window Closed / Lapsed |