Webster, NY, United States of America

John W Spiewak

This inventor holds 57 USPTO granted patents, primarily in Liquid Developer Compositions (CPC class 4301). Top assignees: Xerox Corporation, The Firestone Tire & Rubber Company, Other. Active years: 1976-2006.


% Patents Active = 98.2

Average Co-Inventor Count = 3.1

ph-index = 16

Forward Citations = 1,139(Granted Patents)

Forward Citations (Not Self Cited) = 1,111(Dec 10, 2025)


Inventors with similar research interests:


Location History:

  • Akron, OH (US) (1976 - 1977)
  • Coal City, IL (US) (2000)
  • Webster, NY (US) (1980 - 2006)

Company Filing History:


Years Active: 1976-2006

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Areas of Expertise:
Liquid Developers
Imaging Apparatuses
Fluorinated Polymers
Electrophotographic Imaging
Developer Compositions
Charge Acceptance Additives
Copolymers
Custom Colors
Partially Fluorinated Compounds
Flexible Torch Assembly
Grounding Layers
Photoreceptor Overcoating
57 patents (USPTO):Explore Patents

Title: John W. Spiewak: Innovator in Organometallic Solutions and Coatings

Introduction

John W. Spiewak is a prolific inventor based in Webster, NY, holding an impressive portfolio of 57 patents. His work primarily focuses on the development of processes and materials in the field of electrostatographic printing and organometallic compounds, which have significant implications in various industrial applications.

Latest Patents

Among his most recent patents is a groundbreaking process for solubilizing organometallic compounds in fluorinated solvents. This innovative technique involves the addition of a co-solubilizer that is a partly fluorinated polymer, enabling the organometallic compound to become miscible in the solvent without the need for catalysis. This process leads to the formation of a stable organometallic solution, which is advantageous for various applications.

Another notable patent involves the development of partially fluorinated polymer coated development electrodes. This invention addresses the challenge of toner accumulation on electrode members within electrostatographic printing apparatuses. The coating comprises a partly fluorinated polymer, which significantly enhances the performance and longevity of the printing equipment.

Career Highlights

Throughout his career, John W. Spiewak has made significant contributions to the field while working at recognized companies such as Xerox Corporation and The Firestone Tire & Rubber Company. His innovative work has positioned him as a leading figure within his industry.

Collaborations

John has also collaborated with esteemed professionals, including James R. Larson and David H. Pan. These collaborations highlight the importance of teamwork in driving innovation and advancing technology in their respective fields.

Conclusion

John W. Spiewak's contributions to the world of inventions and patents have proven to be invaluable. With 57 patents under his belt, his continued innovation in solubilizing processes and development coatings showcases his commitment to advancing technology and improving industrial applications. His work remains influential in shaping the future of electrostatographic printing and organometallic chemistry.

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