IDiyas

For the Inventor, By the Inventor

Hitachi, Japan

Hisashi Andoh

USPTO Granted Patents = 13

Average Co-Inventor Count = 6.5

ph-index = 9

Forward Citations = 169(Granted Patents)


Location History:

  • Ibaraki, JP (1990)
  • Hitachi, JP (1988 - 1996)

Company Filing History:

goldMedal13 out of 42,485 
 
Hitachi, Ltd.
 patents

Years Active: 1988-1996

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13 patents (USPTO):Explore Patents
1. 5583840 - ROM type optical recording medium with a high reflectivity and an (1996-12-10),
2. 5572502 - Optical disk apparatus (1996-11-05),
3. 5484686 - Optical recording media and information recording and reproducing units (1996-01-16),
4. 5475656 - Optical disk memory and information processing apparatus (1995-12-12),
5. 5420845 - Methods of varying optical properties, optical devices, information (1995-05-30),
6. 5371730 - Optical memory and information processing apparatus (1994-12-06),
7. 5317556 - Information processing apparatus and optical head incorporated therein (1994-05-31),
8. 5311494 - Optical disk apparatus and optical head (1994-05-10),
9. 5274612 - Information processor and disk memory used in the same (1993-12-28),
10. 5187052 - Optical recording medium (1993-02-16),
11. 4907015 - Thermal printing head (1990-03-06),
12. 4836978 - Method for making vacuum circuit breaker electrodes (1989-06-06),
13. 4773059 - Information recording and reproducing apparatus having recording medium (1988-09-20),

Title: Celebrating the Innovations of Hisashi Andoh in Optical Recording Technologies

Introduction: Hisashi Andoh, based in Hitachi, Japan, is an accomplished inventor known for his significant contributions to optical recording technology. With a remarkable portfolio comprising 13 patents, Andoh has made strides in improving the efficiency and capability of optical storage mediums.

Latest Patents: Hisashi Andoh's latest innovations include a ROM type optical recording medium characterized by high reflectivity, as well as an optical information handling device that enhances the compatibility between different types of optical disks. By lowering the reflectivity of conventional reproduction-only type disks to 60% or less, he has enabled interchangeability with write-once and rewritable optical disks. Additionally, his patented optical disk apparatus allows for intricate recording methods where parameters such as scanning position and irradiation power are dynamically adjusted. This innovation ensures high-precision recording and reproduction, fostering advanced optical data management.

Career Highlights: Andoh's career is marked by his association with Hitachi, Ltd., a leading company in technology and innovation. His contributions have been pivotal in enhancing the functionalities and reliability of optical recording devices, solidifying his reputation in the field.

Collaborations: Throughout his career, Andoh has collaborated with notable colleagues, including Isao Ikuta and Yoshihito Maeda. Together, they have worked on groundbreaking projects that have significantly influenced the optical storage industry, showcasing the power of teamwork in advancing technological frontiers.

Conclusion: Hisashi Andoh's inventions continue to impact the realm of optical recording technologies. Through innovative patents and strategic collaborations, he has established himself as a key figure in this field, paving the way for future enhancements in data storage solutions. His work exemplifies dedication to innovation and a commitment to advancing technological capabilities in optical media.

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