Patent US3091998A successfully refreshed from Google Patents.
US3091998A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Synthetic ski slope
Assignee: Dow Chemical Co
•
Filing: 1959-11-02
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Granted: 1963-06-04
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Expires: 1979-11-02
Abstract
No abstract record available.
Inventors
- 👤 Henry W Wehr
- 👤 Norman J Guziak
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 15:56
CPC Classifications
E; E01; E01C; E01C13/00; E01C13/10; E01C13/12; Y; Y10; Y10S; Y10S273/00; Y10S273/02; Y10S273/04; Y10S273/05; Y10S273/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
90 words
A SYNTHETIC SKI AND LIKE SLOPE COMPRISING A BASE LAYER AND HAVING A SKIING SURFACE LAYER SUPERIMPOSED THEREOVER, SAID BASE LAYER BEING AN EXPANDED FLEXIBLE THERMOPLASTIC SHEET, SAID SURFACE LAYER BEING OF A THICKNESS OF AT LEAST ABOUT 1/8 INCH AND COMPRISED OF GENERALLY SPHERICAL SMOOTHSURFACE PARTICLES HAVING A DIAMETER OF FROM ABOUT 0.01 INCH TO ABOUT 0.375 INCH, AND AN ADHESIVE, SAID ADHESIVE SECURELY BONDING SAID PARTICLES TO EACH OTHER AND TO SAID BASE LAYER AND SAID GENERALLY SPHERICAL PARTICLES PROJECTING ABOVE SAID ADHESIVE TO PROVIDE A SKIING SURFACE.
Claim 2
Dependent Claim
90 words
A SYNTHETIC SKI AND LIKE SLOPE COMPRISING A BASE LAYER AND HAVING A SKIING SURFACE LAYER SUPERIMPOSED THEREOVER, SAID BASE LAYER BEING AN EXPANDED FLEXIBLE THERMOPLASTIC SHEET, SAID SURFACE LAYER BEING OF A THICKNESS OF AT LEAST ABOUT 1/8 INCH AND COMPRISED OF GENERALLY SPHERICAL SMOOTHSURFACE PARTICLES HAVING A DIAMETER OF FROM ABOUT 0.01 INCH TO ABOUT 0.375 INCH, AND AN ADHESIVE, SAID ADHESIVE SECURELY BONDING SAID PARTICLES TO EACH OTHER AND TO SAID BASE LAYER AND SAID GENERALLY SPHERICAL PARTICLES PROJECTING ABOVE SAID ADHESIVE TO PROVIDE A SKIING SURFACE.
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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) | 1966-06-03 | 1966-12-03 | 1967-06-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-06-03 | 1970-12-03 | 1971-06-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-06-03 | 1974-12-03 | 1975-06-04 | $7700.00 | Window Closed / Lapsed |