Company Filing History:

13 out of 42,485

Hitachi, Ltd.

where one patent can have more than one assignee

Years Active: 1980-1993

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13 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 5270827 - Optical recording system for controlling recording light quantity based (1993-12-14),

2. 5151973 - Printing apparatus and information processing apparatus using the same (1992-09-29),

3. 4969047 - Processor for detecting the number of bit times in portions of a binary (1990-11-06),

4. 4840500 - Thermal transfer printer having an improved thermal head to improve ink (1989-06-20),

5. 4743923 - Thermal head (1988-05-10),

6. 4707708 - Thermal print head (1987-11-17),

7. 4672391 - Thermal head (1987-06-09),

8. 4652155 - Printer having a thermal head (1987-03-24),

9. 4591878 - Thermal printer (1986-05-27),

10. 4560993 - Thermal printing method and thermal printer (1985-12-24),

11. 4528572 - Thermal printer (1985-07-09),

12. 4287521 - CRT Hard copy apparatus with multi-directional sampling and printing (1981-09-01),

13. 4216481 - Method of driving a thermal head and apparatus therefor (1980-08-05),

Title: Akiyoshi Hakoyama: Innovator in Optical Recording Systems

Introduction

Akiyoshi Hakoyama is a notable inventor based in Hitachi, Japan. He has made significant contributions to the field of optical recording systems, holding a total of 13 patents. His work has advanced the technology used in printing and information processing, showcasing his innovative spirit and technical expertise.

Latest Patents

One of Hakoyama's latest patents is an optical recording system designed for controlling the recording light quantity based on input pixels. This system compares the information on surrounding pixels with predetermined pattern information, allowing for precise control over the light quantity for each pixel. Another significant patent involves a printing apparatus and information processing apparatus that utilizes a main control unit to manage dot printing elements in laser beam printers. This technology enables the printer to produce images in response to both character pattern dot data signals and gradation data signals, enhancing the versatility and quality of printed outputs.

Career Highlights

Throughout his career, Akiyoshi Hakoyama has worked with prominent companies such as Hitachi, Ltd. and Kyocera Corporation. His experience in these organizations has allowed him to develop and refine his innovative ideas, contributing to advancements in optical technologies.

Collaborations

Hakoyama has collaborated with esteemed colleagues, including Akira Sasaki and Shouji Saitoh. These partnerships have fostered a creative environment that has led to the development of groundbreaking technologies in their respective fields.

Conclusion

Akiyoshi Hakoyama's contributions to optical recording systems and printing technologies highlight his role as a leading inventor in Japan. His innovative patents and collaborations reflect a commitment to advancing technology and improving the efficiency of information processing.

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