Palo Alto, CA, United States of America

Randolph W Chan

This inventor holds 5 USPTO granted patents and 1 published patent application. Top assignee: Raychem Limited. Active years: 1987-1990.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Randolph W Chan. Retrieved from https://idiyas.com/inventor/randolph-w-chan-hqis0w3e

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

Calculating rank
USPTO Granted Patents = 5 

% Patents Active = 100.0

Average Co-Inventor Count = 3.9

ph-index = 4

Forward Citations = 166(Granted Patents)


Location History:

  • Sunnyvale, CA (US) (1987 - 1988)
  • Palo Alto, CA (US) (1989 - 1990)

Company Filing History:


Years Active: 1987-1990

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5 patents (USPTO):Explore Patents

Title: Innovations of Inventor Randolph W. Chan

Introduction: Randolph W. Chan is a notable inventor based in Palo Alto, California, recognized for his innovative contributions in the field of polymeric surfaces and electromagnetic interference (E.M.I.) gaskets. With a total of five patents to his name, Chan has continuously demonstrated a commitment to advancing technology and improving product functionality.

Latest Patents: Chan's recent innovations include two significant patents that highlight his expertise. The first patent involves an article having permanent indicia thereon. This invention focuses on applying permanent white indicia to a polymeric surface, specifically a black, heat-recoverable marker sleeve for wire or cable. The ink composition used includes a thermally stable pigment, like titanium dioxide, and a binder such as nitrocellulose. The marked article successfully passes the military standard for mark permanence, MIL-STD-202.

The second patent concerns shielding and sealing gaskets. This invention provides E.M.I. gaskets designed for electrically shielding and environmentally sealing the space between two surfaces. It comprises a metallic electrically conductive deformable structure, enhancing electrical contact, alongside a gel material that seals the space, exhibiting excellent elongation and moisture resistance. The design ensures corrosion resistance while maintaining environmental protection for the metallic structure.

Career Highlights: Chan has made significant strides in his professional career, with an impressive record of patent applications. Each of his patents reflects his innovative mindset and technical proficiency, allowing him to positively impact the industries in which his inventions are utilized.

Collaborations: Throughout his career, Chan has collaborated with esteemed colleagues such as Paul B. Germeraad and Robert S. Dubrow. These partnerships have undoubtedly fostered an environment of creativity and shared expertise, enabling the development of groundbreaking technologies.

Conclusion: Randolph W. Chan stands out as a prominent inventor in Palo Alto, CA, with a strong portfolio of patents that demonstrate his substantial contributions to engineering and product design. His work at Raychem Limited and collaborations with other experts highlight his dedication to innovation and the advancement of technologies in the polymer and electronics sectors.

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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