US3349665A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Characterizing light reflecting properties of a surface
Assignee: Formica Corp
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Filing: 1964-05-19
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Granted: 1967-10-31
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Expires: 1984-05-19
Abstract
No abstract record available.
Inventors
- 👤 Grosheim Gene Edward
- 👤 Hicks Clark Thomas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 00:15
CPC Classifications
G; G01; G01N; G01N21/00; G01N21/17; G01N21/47; G01N21/4738; G01N21/474; G01N21/55; G01N21/57
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
89 words
AN APPARATUS FOR CHARACTERIZING THE LIGHT REFLECTING CHARACTERISTICS OF A SURFACE COMPRISING A SAMPLE SUPPORT, MEANS TO DIRECT A BEAM OF ESSENTIALLY PARALLEL LIGHT ONTO THE SURFACE OF A SAMPLE, AND A DIFFUSION DOME, CONSISTING OF A TRANSPARENT SUPPORT HAVING DIFFUSION CHARACTERISTICS, OVER THE SAMPLE SUPPORT IN SUCH A POSITION THAT THE LIGHT IMPINGES ON THE SAMPLE SURFACE AT THE CENTER OF THE DOME, AND THE REFLECTED LIGHT IS DIFFUSED BY THE DOME, SO THE INTENSITY AND QUALITY OF THE REFLECTED LIGHT IN ANY DIRECTION IS AT ONCE APPARENT.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-10-30 | 1971-05-01 | 1971-10-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-10-30 | 1975-05-01 | 1975-10-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-10-30 | 1979-05-01 | 1979-10-31 | $7700.00 | Window Closed / Lapsed |