OPTICAL FILM AND DISPLAY DEVICE
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
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N/A
Issued Date -
Nov 9, 2023
app pub date -
Jul 18, 2023
filing date -
Jan 19, 2021
priority date (Note) -
Published
status (Latency Note)
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Importance

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Non-US Coverage
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Abstract
An optical film includes a transparent substrate having opposite first and second surfaces, a colored layer formed to face the first surface of the substrate, and an optical function layer. A colorant in the colored layer contains at least one of a first coloring material having a maximum absorption wavelength in a range of 470 to 530 nm and an absorption spectral half width of 15 to 45 nm, a second coloring material having a maximum absorption wavelength in a range of 560 to 620 nm and an absorption spectral half width of 15 to 55 nm, and a third coloring material having the lowest transmittance in a wavelength range of 400 to 800 nm is in a range of 650 to 800 nm. A transmittance in one of the absorption wavelength bands of the colorant is 1% or more and less than 50%, and ΔE * ab.
First Claim
all claims..Other Claims data not available
Family

- 15 United States
- 10 France
- 8 Japan
- 7 China
- 5 Korea
- 2 Other
Patent Owner(s)
Patent Owner | Address | |
---|---|---|
TOPPAN INC | 5-1 TAITO 1-CHOME TAITO-KU TOKYO 110-0016 |
International Classification(s)

- 2023 Application Filing Year
- G02B Class
- 6885 Applications Filed
- 1930 Patents Issued To-Date
- 28.04 % Issued To-Date
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
---|---|---|---|
FUTAMATA, Kai | Tokyo, JP | 10 | 2 |
# of filed Patents : 10 Total Citations : 2 | |||
ISHIMARU, Yoshiko | Tokyo, JP | 18 | 35 |
# of filed Patents : 18 Total Citations : 35 |
Cited Art Landscape
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Patent Citation Ranking
- 0 Citation Count
- G02B Class
- 0 % this patent is cited more than
- 2 Age
Forward Cite Landscape
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Maintenance Fees
Fee | Large entity fee | small entity fee | micro entity fee | due date |
---|---|---|---|---|
3.5 Year Payment | $1600.00 | $800.00 | $400.00 | May 9, 2027 |
7.5 Year Payment | $3600.00 | $1800.00 | $900.00 | May 9, 2031 |
11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | May 9, 2035 |
Fee | Large entity fee | small entity fee | micro entity fee |
---|---|---|---|
Surcharge - 3.5 year - Late payment within 6 months | $160.00 | $80.00 | $40.00 |
Surcharge - 7.5 year - Late payment within 6 months | $160.00 | $80.00 | $40.00 |
Surcharge - 11.5 year - Late payment within 6 months | $160.00 | $80.00 | $40.00 |
Surcharge after expiration - Late payment is unavoidable | $700.00 | $350.00 | $175.00 |
Surcharge after expiration - Late payment is unintentional | $1,640.00 | $820.00 | $410.00 |
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