Patent US4406627A successfully refreshed from Google Patents.
Patent US3238278A successfully refreshed from Google Patents.
US3238278A
Expired / Lapsed
US
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Method of forming a structural unit
Assignee: OI Glass Inc
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Filing: 1964-08-17
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Granted: 1966-03-01
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Expires: 1984-08-17
Abstract
No abstract record available.
Inventors
- 👤 Charles H Stark
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 20:03
CPC Classifications
E; E04; E04G; E04G11/00; E04G11/36; E04G11/40; E04G11/46; E04B; E04B5/00; E04B5/16; E04B5/32; E04B5/326; E04G9/00; E04G9/02; E04G9/021; Y; Y10; Y10S; Y10S249/00; Y10S249/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
134 words
THE METHOD OF FORMING A STRUCTURAL UNIT, WHICH COMPRISES, FORMING A MOLD DEFINING A NETWORK OF INTERCONNECTED CHANNELS BY ARRANGING ON A PLANE SURFACE A PLURALITY OF LOAD BEARING FIRST VOID FORMS IN SPACED APART RELATION, CASTING A FIRST LAYER OF HARDENABLE CEMENTITIOUS MATERIAL INTO SAID MOLD TO FORM A GRID-LIKE STRUCTURE, COVERING SAID GRID-LIKE STRUCTURE AND FIRST FORMS, EXCEPT AT PREDETERMINED AREAS IN ALIGNMENT WITH SAID GRID-LIKE STRUCTURE, BY ARRANGING ON SAID GRID-LIKE STRUCTURE AND FIRST FORMS A PLURALITY OF LOAD BEARING SECOND VOID FORMS, AND CASTING A SECOND LAYER OF HARDENABLE CEMENTITIOUS MATERIAL ON SAID SECOND VOID FORMS TO FORM A PLANE SLAB ON SAID SECOND VOID FORMS, SAID SECOND LAYER EXTENDING BETWEEN SAID SECOND VOID FORMS IN SAID PREDETERMINED AREAS TO FORM COLUMNS BETWEEN SAID BEAMS AND SLAB AT SAID AREAS.
Claim 2
Independent Claim
134 words
THE METHOD OF FORMING A STRUCTURAL UNIT, WHICH COMPRISES, FORMING A MOLD DEFINING A NETWORK OF INTERCONNECTED CHANNELS BY ARRANGING ON A PLANE SURFACE A PLURALITY OF LOAD BEARING FIRST VOID FORMS IN SPACED APART RELATION, CASTING A FIRST LAYER OF HARDENABLE CEMENTITIOUS MATERIAL INTO SAID MOLD TO FORM A GRID-LIKE STRUCTURE, COVERING SAID GRID-LIKE STRUCTURE AND FIRST FORMS, EXCEPT AT PREDETERMINED AREAS IN ALIGNMENT WITH SAID GRID-LIKE STRUCTURE, BY ARRANGING ON SAID GRID-LIKE STRUCTURE AND FIRST FORMS A PLURALITY OF LOAD BEARING SECOND VOID FORMS, AND CASTING A SECOND LAYER OF HARDENABLE CEMENTITIOUS MATERIAL ON SAID SECOND VOID FORMS TO FORM A PLANE SLAB ON SAID SECOND VOID FORMS, SAID SECOND LAYER EXTENDING BETWEEN SAID SECOND VOID FORMS IN SAID PREDETERMINED AREAS TO FORM COLUMNS BETWEEN SAID BEAMS AND SLAB AT SAID AREAS.
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) | 1969-02-28 | 1969-08-30 | 1970-03-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-28 | 1973-08-30 | 1974-03-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-28 | 1977-08-30 | 1978-03-01 | $7700.00 | Window Closed / Lapsed |