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For the Inventor, By the Inventor

Yarm, United Kingdom

Charles R Hart

This inventor holds 9 USPTO granted patents. Top assignees: Imperial Chemical Industries Limited, Other. Active years: 1976-1999.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Charles R Hart. Retrieved from https://idiyas.com/inventor/charles-r-hart

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

USPTO Granted Patents = 9

% Patents Active = 100.0

Average Co-Inventor Count = 1.3

ph-index = 5

Forward Citations = 49(Granted Patents)


Location History:

  • Hitchin, EN (1976)
  • Yarm, GB (1990 - 1992)
  • Middlesbrough, GB (1997)
  • Cleveland, GB (1991 - 1999)

Company Filing History:

goldMedal8 out of 3,840 
 
Imperial Chemical Industries Limited
 patents
silverMedal1 out of 834,453 
Other
 patents

Years Active: 1976-1999

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9 patents (USPTO):Explore Patents
1. 5906888 - Primed film comprising a polymeric substrate with copolymer layer thereon (1999-05-25),
2. 5658847 - Receiver sheet (1997-08-19),
3. 5130189 - Imagable copy film (1992-07-14),
4. 5093309 - Receiver sheet (1992-03-03),
5. 5089347 - Metallized composite polymer films (1992-02-18),
6. 5037693 - Polymeric films (1991-08-06),
7. 5035945 - Polymeric films (1991-07-30),
8. 4971863 - Metallized films having an adherent copolyester coating (1990-11-20),
9. 3988391 - Transparent rubber-containing blend of acrylonitrile/aromatic olefin (1976-10-26),

Title: The Innovations of Charles R Hart

Introduction

Charles R Hart is a notable inventor based in Yarm, GB. He has made significant contributions to the field of materials science, particularly in the development of advanced films. With a total of 9 patents to his name, Hart's work has had a lasting impact on various industries.

Latest Patents

One of Hart's latest patents is for a primed film comprising a polymeric substrate with a copolymer layer thereon. This innovative film includes a polymeric film substrate layer that features an adherent layer made up of a copolymer. The copolymer consists of comonomers, including 35 to 40 mole % alkyl acrylate, 35 to 40 mole % alkyl methacrylate, 10 to 15 mole % of a monomer containing a free carboxyl group, and 15 to 20 mole % of an aromatic sulphonic acid and/or a salt thereof. This primed film can be utilized in various applications, such as producing metallised films, drafting films, photographic films, and magnetic cards.

Career Highlights

Throughout his career, Charles R Hart has worked with prominent companies, including Imperial Chemical Industries Limited. His expertise in polymer science has allowed him to develop innovative solutions that address industry needs.

Collaborations

Hart has collaborated with several talented individuals, including John Francis and Catherine Jane Goss. These partnerships have contributed to the success of his projects and the advancement of his inventions.

Conclusion

Charles R Hart's contributions to the field of materials science and his innovative patents demonstrate his commitment to advancing technology. His work continues to influence various industries, showcasing the importance of creativity and collaboration in the world of invention.

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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