US3704564A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of fabricating structural block assemblies
Assignee: Hakko Co Ltd
•
Filing: 1969-12-29
•
Granted: 1972-12-05
•
Expires: 1989-12-29
Abstract
Abstract Structural blocks are bonded together by interposing between them an elastic foamed body impregnated with a flowable binder, applying a pressure to the foamed body to squeeze out the impregnated binder in the gap between blocks and then causing the binder to set.
Inventors
- 👤 Motoyuki Koga
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 22:42
CPC Classifications
E; E04; E04B; E04B1/00; E04B1/62; E04B1/66; E04B1/68; E04B1/6812; C; C07; C07F; C07F5/00; C07F5/02; E04B1/38; E04B1/541
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
30 words
A method according to claim 1, wherein the foamed body is interposed between a groove of one of said blocks and a complimentary rib on the other of said blocks.
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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) | 1975-12-05 | 1976-06-05 | 1976-12-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-12-05 | 1980-06-05 | 1980-12-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-12-05 | 1984-06-05 | 1984-12-05 | $7700.00 | Window Closed / Lapsed |