Magnetoresistive random access memory and method of manufacturing the same

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 11812669
APP PUB NO 20220302374A1
SERIAL NO

17835986

Stats

ATTORNEY / AGENT: (SPONSORED)

Importance

Loading Importance Indicators... loading....

Abstract

See full text

A magnetoresistive random access memory (MRAM), including a bottom electrode layer on a substrate, a magnetic tunnel junction stack on the bottom electrode layer, a top electrode layer on the magnetic tunnel junction stack, and a hard mask layer on said top electrode layer, wherein the material of top electrode layer is titanium nitride, a material of said hard mask layer is tantalum or tantalum nitride, and the percentage of nitrogen in the titanium nitride gradually decreases from the top surface of top electrode layer to the bottom surface of top electrode layer.

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

First Claim

See full text

Family

Loading Family data... loading....

Patent Owner(s)

  • UNITED MICROELECTRONICS CORP.

International Classification(s)

  • No Non-US Classification to display

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Chou, Yi-Syun Taipei, TW 10 9
Ho, Kun-Chen Tainan, TW 12 8
Hsieh, Chin-Yang Tainan, TW 41 66
Jhang, Jing-Yin Tainan, TW 64 72
Lai, Yu-Tsung Tainan, TW 53 227
Lee, Yi-Hui Taipei, TW 56 196
Li, Chang-Min Yunlin County, TW 4 3
Lin, Chien-Ting Tainan, TW 213 2048
Liu, Ying-Cheng Tainan, TW 34 112
Shih, Yi-An Changhua County, TW 33 32
Tseng, I-Ming Kaohsiung, TW 79 796
Tseng, Yi-Wei New Taipei, TW 24 72
Wang, Hui-Lin Taipei, TW 109 119
Wang, Yu-Ping Hsinchu, TW 106 530
Weng, Chen-Yi New Taipei, TW 64 122
Xie, Jun Singapore, SG 164 1402

Cited Art Landscape

Load Citation

Patent Citation Ranking

  • No Patent Citation Ranking to display

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 May 7, 2027
7.5 Year Payment $3600.00 $1800.00 $900.00 May 7, 2031
11.5 Year Payment $7400.00 $3700.00 $1850.00 May 7, 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