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For the Inventor, By the Inventor

Itami, Japan

Kenichi Takahira

USPTO Granted Patents = 24

Average Co-Inventor Count = 1.5

ph-index = 15

Forward Citations = 1,372(Granted Patents)


Location History:

  • Hyogo Prefecture, JP (1990)
  • Itami City, JP (1991)
  • Itami, JP (1988 - 1997)
  • Hyogo, JP (1997 - 1999)

Company Filing History:

goldMedal24 out of 21,351 
 
Mitsubishi Denki Kabushiki Kaisha
 patents

Years Active: 1988-1999

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24 patents (USPTO):Explore Patents
1. 5898738 - Modulation, demodulation and antenna coupling circuits used in IC card (1999-04-27),
2. 5671254 - Modulation, demodulation and antenna coupling circuits used in IC card (1997-09-23),
3. 5664157 - Noncontact IC card interface unit and communication system using the (1997-09-02),
4. 5424527 - Signal receiving coil and non-contact type IC card using the same (1995-06-13),
5. 5382778 - Non-contact IC card (1995-01-17),
6. 5367149 - IC card and method of checking personal identification number of the same (1994-11-22),
7. 5337063 - Antenna circuit for non-contact IC card and method of manufacturing the (1994-08-09),
8. 5321240 - Non-contact IC card (1994-06-14),
9. 5286962 - IC card for prevention of fraudulent use (1994-02-15),
10. 5220158 - Non-contact IC card and method of using the same (1993-06-15),
11. 5191192 - Non-contact type information card and communication system (1993-03-02),
12. 5182442 - Low power consumption non-contact integrated circuit card (1993-01-26),
13. 5157247 - IC card (1992-10-20),
14. 5056089 - Memory device (1991-10-08),
15. 5047924 - Microcomputer (1991-09-10),

Title: Innovations by Kenichi Takahira: A Pioneer in IC Card Technology

Introduction

Kenichi Takahira, a prominent inventor based in Itami, Japan, has made significant contributions to the field of integrated circuit (IC) technology. With an impressive portfolio of 24 patents to his name, Takahira's work primarily revolves around modulation, demodulation, and antenna coupling circuits that enhance the functionality of IC cards.

Latest Patents

Among his latest inventions, Takahira's patents include advanced designs for modulators and demodulators used in IC card reader/writers. These innovations feature a phase variation detector that accurately detects changes in the modulated signal's phase. The modulator modifies the signal's amplitude and frequency, integrating it into a triangular wave and then a sinusoidal wave. The demodulator, equipped with a sync control circuit, ensures precise control of a carrier sync signal, distinguishing between lead-phase and lag-phase signals based on binary phase shift keying (BPSK). This intricate technology allows for the conversion of control data and non-modulated carrier waves into usable power for IC cards.

Career Highlights

Kenichi Takahira has been a crucial player in Mitsubishi Denki Kabushiki Kaisha, a leading firm in electronics and electrical equipment. His innovative work has helped the company maintain its edge in developing cutting-edge IC technology.

Collaborations

Throughout his career, Takahira has collaborated with influential colleagues, including Shuzo Fujioka and Toshiyuki Matsubara. These partnerships have fostered the advancement of technology in their field and have led to the successful development of the patents that define Takahira’s career.

Conclusion

Kenichi Takahira's contributions to the realm of IC card technology establish him as a noteworthy inventor. With a portfolio of 24 patents and a commitment to innovative solutions, his work continues to impact the landscape of electronic communication and data transmission. His collaboration with esteemed coworkers further underscores the collaborative spirit that fuels technological advancements in today's fast-paced environment.

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