Apparatus for artificial weathering comprising two kinds of light emission sources
Number of patents in Portfolio can not be more than 2000
United States of America
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Mar 11, 2025
Grant Date -
Nov 10, 2022
app pub date -
Mar 31, 2022
filing date -
Mar 31, 2022
priority date (Note) -
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status (Latency Note)
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Abstract
An apparatus for artificial weathering or lightfastness testing of samples comprises a weathering chamber, a first light source provided in the weathering chamber, the first light source comprising one or more fluorescent UV lamps each comprising an emission spectrum with a maximum wavelength below a predetermined wavelength, and a second light source provided in the weathering chamber, the second light source comprising one or more light emitting diodes each comprising an emission spectrum with a maximum wavelength above the predetermined wavelength.
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International Classification(s)
- 2022 Application Filing Year
- F21Y Class
- 471 Applications Filed
- 315 Patents Issued To-Date
- 66.88 % Issued To-Date
Cited Art Landscape
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- 0 Citation Count
- F21Y Class
- 0 % this patent is cited more than
- < 1 Age
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
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| 3.5 Year Payment | $1600.00 | $800.00 | $400.00 | Sep 11, 2028 |
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