Forward Citations = 437

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7 inventors (with patents filed for the assignee):

Robert S Meijer (2 out of 14 patents)

Gene L Stewart (2 out of 4 patents)

Ralph E Nelson (2 out of 3 patents)

4. Wayne M Spani (1 out of 10 patents)

5. Thomas E Beling (1 out of 4 patents)

6. Tony M Quisenberry (1 out of 5 patents)

7. Fred E Wahlenmeier (1 out of 1 patent)

8 patents: Sort by Forward Citations

1. D330427 - Combined disposable bag and disinfectant container for sterilizing (1992-10-20),

2. 5089228 - Method for sterilizing and disposing of infectious waste (1992-02-18),

3. 5001425 - Ferromagnetic object detector with comparison of signal maximums from a (1991-03-19),

4. 4903832 - Method and apparatus for cleanly storing and disposing of discarded (1990-02-27),

5. 4874103 - Receptacle for receiving infectious waste material (1989-10-17),

6. 4637545 - Waste management system (1987-01-20),

7. 4593873 - Portable hamper with foot pedal operated cover (1986-06-10),

8. 4520926 - Container for sharps (1985-06-04),

Company Overview

Winfield Corporation is a leading provider of innovative solutions for the agriculture industry. With a focus on sustainable practices and cutting-edge technology, we offer a wide range of products and services to help farmers increase their crop yields and improve overall profitability. Our team of experts is dedicated to delivering superior customer service and support, ensuring that our clients have the resources they need to succeed in today's competitive market.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 20 2026

8 Patents

#636 in San Diego, CA

#8,543 in California

#35,941 in US

San Diego, CA, United States of America

Winfield Corporation

Forward Citations = 437

7 inventors:

Robert S Meijer (2 out of 14 patents)

Gene L Stewart (2 out of 4 patents)

Ralph E Nelson (2 out of 3 patents)

4. Wayne M Spani (1 out of 10 patents)

5. Thomas E Beling (1 out of 4 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Winfield Corporation. Retrieved from https://idiyas.com/company/winfield

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

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]