Patent US3307312A successfully refreshed from Google Patents.
US3307312A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Self-supporting light constructional elements for ceilings, roofs and walls
Assignee: Individual
•
Filing: 1964-10-26
•
Granted: 1967-03-07
•
Expires: 1984-10-26
Abstract
No abstract record available.
Inventors
- 👤 Kreibaum Otto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 17:17
CPC Classifications
E; E04; E04C; E04C2/00; E04C2/44; E04C2/52; E04C2/521; E04C2/523; E04C2/02; E04C2/10; E04C2/16; E04C2/24; E04C2/243; E04C2/26; E04C2/284; E04B; E04B1/00; E04B1/62; E04B1/74; E04B1/82; E04B1/84; E04B2001/8457; E04B2001/8461; E04B2001/8476; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24744
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
156 words
A STRUCTURAL AND INSULATING BUILDING BOARD COMPRISING A CORE OF COMPRESSED CHIPS ADHERED TOGETHER BY AN ADHESIVE AND HAVING OPPOSING INNER AND OUTER SIDES AND OPPOSING END EDGES, IMPERFORATE FINISH PANELS FIXEDLY SUPERIMPOSED ON SAID SIDES, SAID OUTER SIDE AND ITS FINISH PANEL BEING ADAPTED TO FACE THE OUTER ATMOSPHERE, SAID CORE BEING FORMED WITH LONGITUDINALLY EXTENDING LATERALLY SPACED BORES CENTRALLY BETWEEN THE SIDES, THERMAL INSULATING SUBSTANCES FILLING SAID BORES AND BEING OF A THICKNESS OF MORE THAN ONE HALF THE THICKNESS OF THE CORE, SAID OUTER SIDE OF THE CORE BEING FORMED WITH LONGITUDINAL SURFACE DUCTS OF SMALLER CROSS-SECTION THAN THE BORES, SAID DUCTS BEING CLOSED OFF BY THE SUPERIMPOSED FINISH PANEL ON THE OUTER SIDE AND OPENING TO THE ATMOSPHERE THROUGH THE END EDGES OF THE CORE AND SAID DUCTS BEING DISPOSED PARALLEL WITH THE BORES AND OFFSET IN RELATION THERETO WHEREBY THE BOARD IS VENTED TO THE OUTER ATMOSPHERE TO DISCHARGE WATER VAPOR.
Claim 2
Dependent Claim
156 words
A STRUCTURAL AND INSULATING BUILDING BOARD COMPRISING A CORE OF COMPRESSED CHIPS ADHERED TOGETHER BY AN ADHESIVE AND HAVING OPPOSING INNER AND OUTER SIDES AND OPPOSING END EDGES, IMPERFORATE FINISH PANELS FIXEDLY SUPERIMPOSED ON SAID SIDES, SAID OUTER SIDE AND ITS FINISH PANEL BEING ADAPTED TO FACE THE OUTER ATMOSPHERE, SAID CORE BEING FORMED WITH LONGITUDINALLY EXTENDING LATERALLY SPACED BORES CENTRALLY BETWEEN THE SIDES, THERMAL INSULATING SUBSTANCES FILLING SAID BORES AND BEING OF A THICKNESS OF MORE THAN ONE HALF THE THICKNESS OF THE CORE, SAID OUTER SIDE OF THE CORE BEING FORMED WITH LONGITUDINAL SURFACE DUCTS OF SMALLER CROSS-SECTION THAN THE BORES, SAID DUCTS BEING CLOSED OFF BY THE SUPERIMPOSED FINISH PANEL ON THE OUTER SIDE AND OPENING TO THE ATMOSPHERE THROUGH THE END EDGES OF THE CORE AND SAID DUCTS BEING DISPOSED PARALLEL WITH THE BORES AND OFFSET IN RELATION THERETO WHEREBY THE BOARD IS VENTED TO THE OUTER ATMOSPHERE TO DISCHARGE WATER VAPOR.
References Cited (Backward Citations)
US1921518A
Cited
US2281121A
Cited
US2445290A
Cited
US2528049A
Cited
US2960423A
Cited
GB907872A
Cited
GB928728A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-03-06 | 1970-09-05 | 1971-03-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-03-06 | 1974-09-05 | 1975-03-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-03-06 | 1978-09-05 | 1979-03-07 | $7700.00 | Window Closed / Lapsed |