Charging roll

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 11656558
APP PUB NO 20220260937A1
SERIAL NO

17630562

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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A charging roll includes a core member, a rubber base material disposed around the core member, and a surface layer disposed around the rubber base material. The average of heights of contours of convex portions on a surface of the surface layer relative to an average cylindrical surface obtained by averaging surface irregularities of the surface layer is equal to or greater than 0.8 micrometers and is equal to or less than 2.1 micrometers. The average of intervals between apexes of the convex portions on the surface of the surface layer is equal to or greater than 6.6 micrometers and is equal to or less than 11.5 micrometers.

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Patent Owner(s)

  • NOK CORPORATION

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Fukuoka, Satoshi Fujisawa, JP 29 129
Oura, Kosuke Fujisawa, JP 8 2
Sasaki, Kenji Fujisawa, JP 273 2753
Suzuki, Shogo Fujisawa, JP 162 974

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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 Nov 23, 2026
7.5 Year Payment $3600.00 $1800.00 $900.00 Nov 23, 2030
11.5 Year Payment $7400.00 $3700.00 $1850.00 Nov 23, 2034
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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