Method for providing a monolithic shield for a magnetic recording transducer

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 8914969
SERIAL NO

13717057

Stats

ATTORNEY / AGENT: (SPONSORED)

Importance

Loading Importance Indicators... loading....

Abstract

See full text

A method fabricates a magnetic transducer. A sacrificial leading shield is provided on an etch stop layer. A nonmagnetic layer is provided on the sacrificial leading shield. A pole trench is formed in the nonmagnetic layer and on the sacrificial leading shield. A pole is formed. The pole has a bottom and a top wider than the bottom in a pole tip region. Part of the pole in the pole tip region is in the pole trench and at the ABS location. The sacrificial leading shield and part of the nonmagnetic layer adjacent to the pole are removed. An air bridge thus resides in place of the sacrificial leading shield between the portion of the pole and the etch stop layer. As least one shield layer is provided. The at least one shield layer substantially fills the air bridge and form a monolithic shield including a leading and side shields.

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

First Claim

See full text

Family

Loading Family data... loading....

Patent Owner(s)

Patent OwnerAddress
WESTERN DIGITAL TECHNOLOGIES INC3355 MICHELSON DRIVE STE 100 IRVINE CA 92612

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Jiang, Hongzhou Fremont, US 9 329
Li, Donghong Pleasanton, US 31 1399
Lu, Ching-Huang Fremont, US 119 1023
Pan, Tao San Jose, US 82 3762
Su, Wencheng Cupertino, US 10 323
Wang, Lien-Chang Fremont, US 45 3729
Zhong, Lieping San Jose, US 10 187
Zhou, Xiaotian Fremont, US 18 41

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 Jun 23, 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