Forward Citations = 77

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3 inventors (with patents filed for the assignee):

Louis L Wood (6 out of 74 patents)

Gary J Calton (5 out of 53 patents)

Gary J Carlton (1 out of 1 patent)

6 patents: Sort by Forward Citations

1. 4732851 - Immobilization of cells with a polyazetidine prepolymer (1988-03-22),

2. 4728611 - Production of phenylalanine with immobilized cells (1988-03-01),

3. 4710467 - Process for preparing phenylalanine (1987-12-01),

4. 4650755 - Immobilizing microbial cells with polyfunctional aziridines (1987-03-17),

5. 4600692 - Immobilized cells for preparing phenylalanine (1986-07-15),

6. 4436813 - Immobilized microbial cell composition for making L-aspartic acid (1984-03-13),

Company Overview

Purification Engineering, Inc. is a leading provider of water and wastewater treatment solutions. With over 20 years of experience, we specialize in designing and implementing advanced purification systems for industrial and municipal clients. Our innovative technologies help streamline operations, reduce costs, and comply with environmental regulations. Contact us today to learn how we can help improve your water treatment processes.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 20 2026

6 Patents

#52 in Columbia, MD

#635 in Maryland

#45,007 in US

Columbia, MD, United States of America

Purification Engineering, Inc.

Forward Citations = 77

3 inventors:

Louis L Wood (6 out of 74 patents)

Gary J Calton (5 out of 53 patents)

Gary J Carlton (1 out of 1 patent)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Purification Engineering, Inc.. Retrieved from https://idiyas.com/company/purification-engineering

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]