Patent EP1442830A1 successfully refreshed from Google Patents.
US2977265A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ceramic structure and method of making same
Assignee: Hexcel Products Inc
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Filing: 1957-06-19
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Granted: 1961-03-28
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Expires: 1977-06-19
Abstract
No abstract record available.
Inventors
- 👤 Richard P Forsberg
- 👤 Kenneth M Holland
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:42
CPC Classifications
E; E04; E04C; E04C2/00; E04C2/30; E04C2/34; E04C2/36; E04C2/365; B; B28; B28B; B28B1/00; B28B1/26; B28B1/265; B28B1/268; B28B7/00; B28B7/34; B28B7/342; B64; B64C; B64C3/00; Y; Y10; Y10S; Y10S165/00; Y10S165/905; Y10S264/00; Y10S264/44; Y10T; Y10T156/00; Y10T156/10; Y10T156/1002; Y10T156/1003; Y10T428/00; Y10T428/24; Y10T428/24149
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
119 words
A STRUCTURAL SANDWICH CORESTOCK COMPRISING REINFORCING WEB FABRICATED FROM SHEET MATERIAL INTO AN INTEGRAL GEOMETRIC OPEN CELLULAR SECTION, SAID SHEET MATERIAL FORMED THROUGHOUT ITS AREA WITH CLOSELY SPACED, RELATIVELY SMALL, THROUGH-GOING OPENINGS, ADJACENT REINFORCING WEBS CONNECTED TOGETHER AT SPACED NODE AREAS DEFINING DOUBLE THICKNESS WEB PORTIONS SUBSTANTIALLY ENTIRELY EMBEDDED WITHIN WALLS OF BAKED CERAMIC COMPOSITION WITH SAID COMPOSITION PENETRATING FROM OPPOSITE SIDES OF THE WEB MATERIAL THROUGH SAID OPENINGS HOMOGENEOUSLY COHERING THE COMPOSITION ON OPPOSITE SIDES OF THE WEB MATERIAL INCLUDING THE DOUBLE THICKNESS NODE BOND AREAS, SAID CERAMIC COMPOSITION DEFINING GENERALLY THE SAME GEOMETRIC OPEN CELLULAR SHAPE AS SAID REINFORCING WEB AND DEFINING A PLURALITY OF OPEN ENDED CELL OPENINGS EXTENDING UNIDIRECTIONALLY THROUGH THE THICKNESS OF SAID STRUCTURE.
Claim 2
Dependent Claim
119 words
A STRUCTURAL SANDWICH CORESTOCK COMPRISING REINFORCING WEB FABRICATED FROM SHEET MATERIAL INTO AN INTEGRAL GEOMETRIC OPEN CELLULAR SECTION, SAID SHEET MATERIAL FORMED THROUGHOUT ITS AREA WITH CLOSELY SPACED, RELATIVELY SMALL, THROUGH-GOING OPENINGS, ADJACENT REINFORCING WEBS CONNECTED TOGETHER AT SPACED NODE AREAS DEFINING DOUBLE THICKNESS WEB PORTIONS SUBSTANTIALLY ENTIRELY EMBEDDED WITHIN WALLS OF BAKED CERAMIC COMPOSITION WITH SAID COMPOSITION PENETRATING FROM OPPOSITE SIDES OF THE WEB MATERIAL THROUGH SAID OPENINGS HOMOGENEOUSLY COHERING THE COMPOSITION ON OPPOSITE SIDES OF THE WEB MATERIAL INCLUDING THE DOUBLE THICKNESS NODE BOND AREAS, SAID CERAMIC COMPOSITION DEFINING GENERALLY THE SAME GEOMETRIC OPEN CELLULAR SHAPE AS SAID REINFORCING WEB AND DEFINING A PLURALITY OF OPEN ENDED CELL OPENINGS EXTENDING UNIDIRECTIONALLY THROUGH THE THICKNESS OF SAID STRUCTURE.
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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) | 1964-03-27 | 1964-09-26 | 1965-03-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-03-27 | 1968-09-26 | 1969-03-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-03-27 | 1972-09-26 | 1973-03-28 | $7700.00 | Window Closed / Lapsed |