logo

For the Inventor, By the Inventor

Kurashiki, Japan

Hitoshi Maruyama

This inventor holds 17 USPTO granted patents, primarily in Polymer Chemistry. Top assignee: Kuraray Co., Ltd.. Active years: 1981-1997.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Hitoshi Maruyama. Retrieved from https://idiyas.com/inventor/hitoshi-maruyama

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

Calculating rank
USPTO Granted Patents = 17

% Patents Active = 100.0

Average Co-Inventor Count = 3.8

ph-index = 10

Forward Citations = 294(Granted Patents)


Location History:

  • Osaka, JP (1995)
  • Kurashiki, JP (1981 - 1997)

Company Filing History:

goldMedal17 out of 1,872 
 
Kuraray Co., Ltd.
 patents

Years Active: 1981-1997

Loading Chart...
Areas of Expertise:
Aqueous Emulsion
Paper Coating Agent
Suspension Polymerization
Vinyl Ester Polymer
Ethylene-Vinyl Alcohol Copolymers
Water-Soluble Binder
Microencapsulation
Heat-Sensitive Recording Sheet
Water Resistant Composition
Ceramics Molding
17 patents (USPTO):Explore Patents
1. 5599870 - Aqueous emulsion (1997-02-04),
2. 5527852 - Paper coating agent (1996-06-18),
3. 5420180 - Sized yarn and process therefor (1995-05-30),
4. 5387638 - Emulsion composition (1995-02-07),
5. 5349008 - Process for suspension polymerization of vinyl compound (1994-09-20),
6. 5331055 - Process for producing vinyl ester polymer and process for producing (1994-07-19),
7. 5308911 - Secondary suspending agent for suspension polymerization of vinyl (1994-05-03),
8. 5308910 - Composition, adhesive and aqueous emulsion (1994-05-03),
9. 5134036 - Ethylene-vinyl alcohol copolymers, moldings and laminates (1992-07-28),
10. 5132146 - Method of aqueous ink printing on an ink absorbing layer being coated on (1992-07-21),
11. 5102950 - Water soluble film (1992-04-07),
12. 5034451 - Water-soluble binder and hot-melt binder for ceramics molding (1991-07-23),
13. 4708947 - Water resistant composition and heat-sensitive recording sheet (1987-11-24),
14. 4617239 - Paper coating agent (1986-10-14),
15. 4567221 - Water resistant compositions (1986-01-28),

Title: The Innovative Contributions of Hitoshi Maruyama

Introduction

Hitoshi Maruyama is a prominent inventor based in Kurashiki, Japan, holding an impressive number of 17 patents. His innovative work, particularly in the field of aqueous emulsions and coating agents, has significantly impacted various industries.

Latest Patents

One of Maruyama's latest inventions is an aqueous emulsion that consists of a modified polyvinyl alcohol dispersant, characterized by a low ethylene unit content and a high degree of hydrolysis. This emulsion exhibits excellent structural viscosity, making it suitable for high-speed application performance. Additionally, it provides coated layers that possess exceptional water resistance and low-temperature stability. This versatile adhesive is applicable in diverse fields, including paper, wood, and plastics. Another notable innovation is a paper coating agent that incorporates particulate PVA with an average particle diameter between 0.01 to 1 µm, demonstrating excellent applicability when used with blade coaters or roll coaters.

Career Highlights

Hitoshi Maruyama has spent a significant portion of his career at Kuraray Co., Ltd., a leading company in chemical products and materials. His expertise in polymer science has driven the development of advanced adhesive technologies that cater to various industrial needs.

Collaborations

Throughout his career, Maruyama has collaborated with notable coworkers, including Takuji Okaya and Kazutoshi Terada. Their combined efforts have contributed to the successful development of innovative products and patented technologies.

Conclusion

Hitoshi Maruyama's contributions to the field of emulsions and coatings are noteworthy. With his 17 patents, he continues to push the boundaries of innovation, providing solutions that enhance product performance in multiple applications. His work exemplifies the vital role of inventors in advancing technology and improving industry standards.

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]
Loading…