Robert W Callahan

This inventor holds 7 USPTO granted patents. Top assignees: Celgard Inc., Hoechst Celanese Corporation, Celanese Gmbh. Active years: 1990-2003.

USPTO Granted Patents = 7

% Patents Active = 100.0

Average Co-Inventor Count = 2.3

ph-index = 6

Forward Citations = 216(Granted Patents)

Company Filing History:

Hoechst Celanese Corporation

Years Active: 1990-2003

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7 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 6602593 - Battery separators with reduced splitting propensity (2003-08-05),

2. 6287730 - Hydrophilic polyolefin having a coating containing a surfactant and an EVOH copolymer (2001-09-11),

3. 6057061 - Ethylene-vinyl alcohol copolymer battery separator (2000-05-02),

4. 5102552 - Membranes from UV-curable resins (1992-04-07),

5. 4976897 - Composite porous membranes and methods of making the same (1990-12-11),

6. 4976867 - Systems and methods for predetermining maximum pressure differentials (1990-12-11),

7. 4966707 - Liquid/liquid extractions with microporous membranes (1990-10-30),

Title: The Innovations of Robert W Callahan

Introduction

Robert W Callahan is a notable inventor based in Charlotte, NC (US). He has made significant contributions to the field of battery technology, holding a total of 7 patents. His work focuses on enhancing the performance and safety of battery components.

Latest Patents

One of his latest patents involves the development of battery separators with reduced splitting propensity. This innovation features a split-resistant microporous membrane designed for use in battery separators. The membrane boasts a tensile strength ratio that optimizes its performance, ensuring durability and reliability. Another significant invention is a hydrophilic polyolefin article that includes a coating with a surfactant and an ethylene vinyl alcohol (EVOH) copolymer. This invention aims to improve the functionality of polyolefin articles in various applications.

Career Highlights

Throughout his career, Robert W Callahan has worked with prominent companies such as Celgard Inc. and Hoechst Celanese Corporation. His experience in these organizations has allowed him to refine his expertise in materials science and battery technology.

Collaborations

Robert has collaborated with several professionals in his field, including Richard D Johnson and Ron W Call. These partnerships have contributed to the advancement of his innovative projects and patents.

Conclusion

Robert W Callahan's contributions to battery technology and materials science are noteworthy. His inventions continue to influence the industry, showcasing his dedication to innovation and excellence.