US3317363A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Corrugated product
Assignee: Haveg Industries Inc
•
Filing: 1963-11-29
•
Granted: 1967-05-02
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Expires: 1983-11-29
Abstract
No abstract record available.
Inventors
- 👤 Walter O Weber
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:54
CPC Classifications
E; E04; E04C; E04C2/00; E04C2/30; E04C2/34; E04C2/3405; B; B29; B29C; B29C44/00; B29C44/20; B29C44/22; B29C44/24; B29C44/30; B29C44/306; B29C65/00; B29C65/48; B29C65/78; B29C65/7858; B29C65/7888; B29C65/7894; B29C66/00; B29C66/40; B29C66/41; B29C66/43; B29C66/438; B29C66/70; B29C66/72; B29C66/723; B29C66/727; B29C66/73; B29C66/739; B29C66/7392; B29C66/80; B29C66/83; B29C66/834; B29C66/8341; B29C66/83411; B29C66/83413; B32; B32B; B32B27/00; B29C66/71; E04C2002/3444; E04C2002/3466; E04C2002/3494; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1002; Y10T156/1025; Y10T428/00; Y10T428/24; Y10T428/24628; Y10T428/24736; Y10T428/249921; Y10T428/249953; Y10T428/249987; Y10T428/249988; Y10T428/249989
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
97 words
A METHOD OF FORMING A CORRUGATED BOARD WITH A CORRUGATED CORE OF FOAMED, THERMOPLASTIC RESIN HAVING INTEGRAL NON-FOAMED SKINS ON BOTH SURFACES AND SURFACING PLANAR SHEETS COMPRISING EXTRUDING A SHEET OF FOAMED THERMOPLASTIC RESIN, CHILLING BOTH THE TOP AND BOTTOM PORTIONS OF SAID SHEET PRIOR TO CORRUGATION TO FORM NON-POROUS, UNFOAMED SKINS INTEGRAL WITH THE FOAMED CORE, CORRUGATING SAID SHEET IN A DIRECTION PARALLEL TO THE EXTRUSION DIRECTION WHEREBY PEAKS AND LOW POINTS ARE FORMED IN THE SHEET AND ADHERING SURFACING PANELS TO THE SKIN SURFACE OF BOTH THE PEAKS AND LOW POINTS OF SAID CORRUGATED SHEET.
Claim 2
Independent Claim
97 words
A METHOD OF FORMING A CORRUGATED BOARD WITH A CORRUGATED CORE OF FOAMED, THERMOPLASTIC RESIN HAVING INTEGRAL NON-FOAMED SKINS ON BOTH SURFACES AND SURFACING PLANAR SHEETS COMPRISING EXTRUDING A SHEET OF FOAMED THERMOPLASTIC RESIN, CHILLING BOTH THE TOP AND BOTTOM PORTIONS OF SAID SHEET PRIOR TO CORRUGATION TO FORM NON-POROUS, UNFOAMED SKINS INTEGRAL WITH THE FOAMED CORE, CORRUGATING SAID SHEET IN A DIRECTION PARALLEL TO THE EXTRUSION DIRECTION WHEREBY PEAKS AND LOW POINTS ARE FORMED IN THE SHEET AND ADHERING SURFACING PANELS TO THE SKIN SURFACE OF BOTH THE PEAKS AND LOW POINTS OF SAID CORRUGATED SHEET.
References Cited (Backward Citations)
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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) | 1970-05-01 | 1970-10-31 | 1971-05-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-05-01 | 1974-10-31 | 1975-05-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-05-01 | 1978-10-31 | 1979-05-02 | $7700.00 | Window Closed / Lapsed |