Charles W Ragsdale

This inventor holds 27 USPTO granted patents and 1 published patent application, plus 3 CIPO patents and 2 EPO patents, primarily in Electroporation Technology. Top assignees: Bio-Rad Laboratories, Inc., Cavitron, Inc.. Active years: 1979-2015.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Charles W Ragsdale. Retrieved from https://idiyas.com/inventor/charles-w-ragsdale

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

Calculating rank

USPTO Granted Patents = 27 (Patent Applications = 1)

% Patents Active = 77.8

CIPO Patents = 3

EPO Patents = 2 (Patent Applications = 3)

Average Co-Inventor Count = 1.3

ph-index = 8

Forward Citations = 193(Granted Patents)

Location History:

Garden Grove, CA (US) (1979 - 1982)
Concord, CA (US) (1982 - 2015)

Company Filing History:

24 out of 1,071

Bio-Rad Laboratories, Inc.

Years Active: 1979-2015

Loading Chart...

Areas of Expertise:

Electroporation

Temperature Control

High-Throughput Systems

Electric Field

Transfection

Resistance Measurement

Centrifugal Force

Imaging

Arc Detection

Cell Fusion

Functional Lid

Spatial Arrays

27 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 8945881 - Localized temperature control for spatial arrays of reaction media (2015-02-03),

2. 8222909 - Electroporation system with dial-in time constant (2012-07-17),

3. 8221299 - Centrifugal force-based system for detection/treatment of membrane-encased structures (2012-07-17),

4. 8043838 - Electroporation cuvette with spatially variable electric field (2011-10-25),

5. 8017381 - Composite electroporation plate with interchangeable well inserts (2011-09-13),

6. 8008063 - Individual-cell electroporation using area-focused electric fields (2011-08-30),

7. 7943367 - High-throughput electroporation chamber with functional lid for risk reduction (2011-05-17),

8. 7923238 - Multi-channel electroporation system (2011-04-12),

9. 7799555 - Apparatus for high-throughput electroporation (2010-09-21),

10. 7771933 - Localized temperature control for spatial arrays of reaction media (2010-08-10),

11. 7750605 - Controlling an electrical signal sent to a sample load using a pulse modulated resistance (2010-07-06),

12. 7576549 - Methods for measuring sample resistance in electroporation (2009-08-18),

13. 7454047 - Imaging method and apparatus (2008-11-18),

14. 7428322 - Imaging method and apparatus (2008-09-23),

15. 6771082 - Resistance circuit stabilization and pulse duration control systems for electroporation instruments (2004-08-03),

Title: The Innovative Contributions of Charles W. Ragsdale

Introduction

Charles W. Ragsdale, an inventive mind based in Concord, CA, has made significant strides in the field of technology with an impressive portfolio of 27 patents. His work primarily focuses on the development of advanced systems for scientific applications, showcasing his commitment to innovation and efficiency.

Latest Patents

Among Ragsdale's latest patents is a groundbreaking method for localized temperature control within spatial arrays of reaction media. This innovation allows for individual temperature management in various simultaneous reactions, utilizing thermoelectric modules that either supply or absorb heat in specific regions of a multi-well plate. Another noteworthy patent involves a centrifugal force-based system designed for the detection and treatment of membrane-encased structures, such as biological cells and vesicles. This design allows for precise control and manipulation of cells using centrifugal force, enhancing capabilities for applications in transfection and flow cytometry.

Career Highlights

Throughout his career, Ragsdale has contributed his expertise to notable companies such as Bio-Rad Laboratories, Inc. and Cavitron, Inc. His work at these organizations has not only furthered the development of innovative technologies but has also positioned him as a leading figure in the scientific community.

Collaborations

Ragsdale has collaborated with talented professionals, including German Arciniegas and Jeff Ceremony. These partnerships have facilitated the exchange of ideas and fostered a collaborative environment, essential for driving innovation forward.

Conclusion

Charles W. Ragsdale's dedication to innovation is evident through his extensive patent portfolio and impactful collaborations. His contributions in localized temperature control and membrane-encased structures continue to shape advancements in scientific applications, reflecting a rich career marked by creativity and technical prowess.

Profile summary based on public USPTO records.