Perpendicular magnetic recording disk

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 8951651
APP PUB NO 20120141835A1
SERIAL NO

13149659

Stats

ATTORNEY / AGENT: (SPONSORED)

Importance

Loading Importance Indicators... loading....

Abstract

See full text

[Problem] A perpendicular magnetic disk with an improved SNR and increased recording density by further advancing microfabrication and uniformalization of particle diameters and improving crystal orientation regarding a preliminary ground layer made of a Ni-base alloy is provided.

Loading the Abstract Image... loading....

First Claim

See full text

Family

Loading Family data... loading....

Patent Owner(s)

Patent OwnerAddress
WESTERN DIGITAL TECHNOLOGIES INC5601 GREAT OAKS PARKWAY SAN JOSE CA 95119

International Classification(s)

  • [Classification Symbol]
  • [Patents Count]

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Sakamoto, Kazuaki Singapore, SG 9 312

Cited Art Landscape

Load Citation

Patent Citation Ranking

Forward Cite Landscape

Load Citation

Maintenance Fees

Fee Large entity fee small entity fee micro entity fee due date
11.5 Year Payment $7400.00 $3700.00 $1850.00 Aug 10, 2026
Fee Large entity fee small entity fee micro entity fee
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