Shougo Iwai

This inventor holds 16 USPTO granted patents, primarily in Image Formation Technology. Top assignee: Sharp Kabushiki Kaisha Corporation. Active years: 1989-1994.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Shougo Iwai. Retrieved from https://idiyas.com/inventor/shougo-iwai

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

Calculating rank

USPTO Granted Patents = 16

% Patents Active = 100.0

Average Co-Inventor Count = 2.0

ph-index = 7

Forward Citations = 230(Granted Patents)

Location History:

Nara, JP (1989 - 1991)
Moriyama, JP (1991)
Yamatokoriyama, JP (1989 - 1994)

Company Filing History:

16 out of 25,982

Sharp Kabushiki Kaisha Corporation

patents

Years Active: 1989-1994

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Areas of Expertise:

Electrophotography

Photosensitive Sheets

Image Forming Apparatus

Shredding Machines

Light Image Memory

Transport Control

Copying Machines

Cartridge Design

Rewind Devices

Slidefilm Exposure

16 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 5332639 - Toner for use in electrophotography and its manufacturing process (1994-07-26),

2. 5237522 - Photosensitive sheet remaining amount detection device for image forming (1993-08-17),

3. 5077574 - Image forming apparatus (1991-12-31),

4. 5070360 - Copying machine with a slidefilm exposure device (1991-12-03),

5. 5003344 - Projection unit for a light permeable original in a copying machine (1991-03-26),

6. 4994851 - Photosensitive sheet rewind device for image forming apparatus (1991-02-19),

7. 4989038 - Image forming apparatus utilizing a light image memory (1991-01-29),

8. 4957243 - Shredder (1990-09-18),

9. 4939535 - Method of controlling transport of photoreceptive sheet (1990-07-03),

10. 4918537 - Image forming apparatus (1990-04-17),

11. 4914479 - Image formation apparatus with cartridge for roll of photosensitive sheet (1990-04-03),

12. 4912510 - Image forming apparatus with detachable cartridge (1990-03-27),

13. 4907030 - Image formation apparatus with a cartridge for a roll of photosensitive (1990-03-06),

14. 4842205 - Shredding machine (1989-06-27),

15. 4817877 - Shredding machine (1989-04-04),

Title: Shougo Iwai: Innovator in Electrophotography Technologies

Introduction

Shougo Iwai is a prominent inventor based in Yamatokoriyama, Japan. He has made significant contributions to the field of electrophotography, holding a total of 16 patents. His innovative work has led to advancements in toner technology and image forming processes.

Latest Patents

One of Iwai's latest patents is a toner for use in electrophotography. This toner comprises toner particles and an external additive made from a silica fine powder. The silica is coated with a mixture of tin oxide and antimony, which enhances the flowability of the toner and ensures uniform image density. Additionally, this mixture stabilizes the toner by lowering the electric resistance on the surface of the toner particles. Another notable patent is a photosensitive sheet remaining amount detection device for image forming. This invention includes a rotation detector that measures the rotation of a photosensitive sheet roll, allowing for accurate indication of the remaining material.

Career Highlights

Shougo Iwai is associated with Sharp Kabushiki Kaisha Corporation, where he has been instrumental in developing innovative technologies. His work has not only improved the efficiency of electrophotography but has also contributed to the overall quality of printed images.

Collaborations

Iwai has collaborated with notable coworkers, including Mitsuru Ogura and Akira Tamagaki. Their combined efforts have led to advancements in the technologies they work on, further enhancing the capabilities of electrophotography.

Conclusion

Shougo Iwai's contributions to the field of electrophotography through his patents and innovations have made a lasting impact. His work continues to influence the industry, showcasing the importance of creativity and technological advancement in modern imaging solutions.

Profile summary based on public USPTO records.

Data Sources: USPTO Patent Grant XML, Patent Center, EPO & CIPO • Normalized by IDiyas Innovation Graph. Methodology & provenance architecturePlease report any incorrect information to [email protected]