Semiconductor power device

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 12068410
APP PUB NO 20210359123A1
SERIAL NO

17387433

Stats

ATTORNEY / AGENT: (SPONSORED)

Importance

Loading Importance Indicators... loading....

Abstract

See full text

A semiconductor power device includes a substrate; a buffer structure formed on the substrate; a barrier structure formed on the buffer structure; a channel layer formed on the barrier structure; and a barrier layer formed on the channel layer; wherein the barrier structure includes a first functional layer on the buffer structure, a second functional layer formed between the first functional layer and the buffer structure, a first back-barrier layer on the first functional layer, and an interlayer between the first back-barrier layer and the first functional layer; wherein a material of the first back-barrier layer includes Alx1Ga1-x1N, a material of the first functional layer includes Alx2Ga1-x2N, a material of the interlayer includes Alx3Ga1-x3N, a material of the second functional layer includes Alx4Ga1-x4N, wherein 0

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

First Claim

See full text

Family

Loading Family data... loading....

Patent Owner(s)

Patent OwnerAddress
EPISTAR CORPORATION21 LI-HSIN RD SCIENCE-BASED INDUSTRIAL PARK HSINCHU 300

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Chang, Tsung-Cheng Hsinchu, TW 8 24
Liu, Chia-Cheng Hsinchu, TW 38 144
Tu, Shang-Ju Hsinchu, TW 7 17
Yang, Ya-Yu Hsinchu, TW 11 37

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
3.5 Year Payment $1600.00 $800.00 $400.00 Feb 20, 2028
7.5 Year Payment $3600.00 $1800.00 $900.00 Feb 20, 2032
11.5 Year Payment $7400.00 $3700.00 $1850.00 Feb 20, 2036
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