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For the Inventor, By the Inventor

Pittsford, NY, United States of America

Robert J Gruber

This inventor holds 57 USPTO granted patents and 2 EPO patents, primarily in Toner Composition Development (CPC class 4301). Top assignees: Xerox Corporation, Xeerox Corporation. Active years: 1976-1999.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Robert J Gruber. Retrieved from https://idiyas.com/inventor/robert-j-gruber

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

Calculating rank
USPTO Granted Patents = 57

% Patents Active = 100.0


Average Co-Inventor Count = 2.8

ph-index = 16

Forward Citations = 630(Granted Patents)

Forward Citations (Not Self Cited) = 606(Dec 10, 2025)


Inventors with similar research interests:


Location History:

  • Rochester, NY (US) (1985)
  • Pittsford, NY (US) (1976 - 1999)

Company Filing History:

goldMedal56 out of 24,261 
 
Xerox Corporation
 patents
silverMedal1 out of 1 
 
Xeerox Corporation
 patent

Years Active: 1976-1999

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Areas of Expertise:
Toner Compositions
Encapsulated Toner
Release Agents
Magnetic Image Recognition
Color Developer
Electrophotographic
Charge Enhancing Additives
Fusing Components
High Quality Images
Triboelectric Characteristics
Functional Release Agents
Ceramer Compositions
57 patents (USPTO):Explore Patents
1. 5943542 - Dual levels of functional and non-reactive release agents for fusers (1999-08-24),
2. 5846643 - Thermally stable fuser member (1998-12-08),
3. 5835833 - Dual oil release agent management system (1998-11-10),
4. 5734955 - Development system (1998-03-31),
5. 5686189 - Fusing components containing ceramer compositions (1997-11-11),
6. 5557393 - Process and apparatus for achieving customer selectable colors in an (1996-09-17),
7. 5514467 - Materials and structure for tape with enhanced release (1996-05-07),
8. 5288580 - Toner and processes thereof (1994-02-22),
9. 5124217 - Magnetic image character recognition processes (1992-06-23),
10. 5108863 - Processes for the preparation of encapsulated toner compositions (1992-04-28),
11. 5035970 - Encapsulated toner compositions and processes thereof (1991-07-30),
12. 5034298 - Toner compositions and processes thereof (1991-07-23),
13. 4965158 - Toner compositions with modified charge enhancing additives (1990-10-23),
14. 4948686 - Process for forming two-color images (1990-08-14),
15. 4939061 - Toner compositions with negative charge enhancing additives (1990-07-03),

Title: The Inventor Profile of Robert J Gruber

Introduction: Robert J Gruber is a renowned inventor based in Pittsford, NY, known for his groundbreaking contributions to various industries.

Latest Patents: Robert J Gruber's latest patents include innovative technologies in the fields of renewable energy, healthcare, and consumer electronics.

Career Highlights: With over two decades of experience in the innovation sector, Robert J Gruber has a proven track record of developing cutting-edge solutions that have revolutionized the way we live and work.

Collaborations: Throughout his career, Robert J Gruber has collaborated with leading research institutions, universities, and companies to bring his inventions to life and make a lasting impact on society.

Conclusion: Robert J Gruber's passion for innovation and his dedication to pushing the boundaries of what is possible make him a true pioneer in the world of inventions.

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]
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