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For the Inventor, By the Inventor

Lyndeborough, NH, United States of America

Barry A Cullen

This inventor holds 10 USPTO granted patents. Top assignees: Hampshire Chemical Corp., W. R. Grace Co.-Conn.. Active years: 1993-2002.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Barry A Cullen. Retrieved from https://idiyas.com/inventor/barry-a-cullen

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

USPTO Granted Patents = 10

% Patents Active = 100.0

Average Co-Inventor Count = 2.0

ph-index = 8

Forward Citations = 151(Granted Patents)


Location History:

  • Lyndeborough, NH (US) (1993 - 2000)
  • Lyndeboro, NH (US) (1993 - 2002)

Company Filing History:

goldMedal9 out of 43 
 
Hampshire Chemical Corp.
 patents
silverMedal1 out of 1,391 
 
W. R. Grace Co.-Conn.
 patents

Years Active: 1993-2002

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10 patents (USPTO):Explore Patents
1. 6365772 - Facile synthesis of phosphonomethylglycine from phosphonomethyliminodiacetic acid (2002-04-02),
2. 6118022 - Synthesis of phosphonomethyliminodiacetic acid with reduced effluent (2000-09-12),
3. 5993504 - Plant micronutrient chelating surfactant compounds (1999-11-30),
4. 5962717 - Plant micronutrient chelating surfactant compounds (1999-10-05),
5. 5843866 - Pesticidal compositions comprising solutions of polyurea and/or (1998-12-01),
6. 5449822 - Preparation of ethylenediaminetriacetic acid (1995-09-12),
7. 5312972 - Conversion of hydroxymethyl-iminodiacetic acid to (1994-05-17),
8. 5284972 - N-acyl-N,N',N'-ethylenediaminetriacetic acid derivatives and process of (1994-02-08),
9. 5250728 - Preparation of ethylenediaminetriacetic acid (1993-10-05),
10. 5187301 - Preparation of iminodiacetonitrile from glycolonitrile (1993-02-16),

Title: Barry A Cullen: Innovator in Chemical Synthesis

Introduction

Barry A Cullen is a notable inventor based in Lyndeborough, NH (US). He has made significant contributions to the field of chemical synthesis, holding a total of 10 patents. His work focuses on innovative processes that enhance the efficiency and yield of chemical reactions.

Latest Patents

Among his latest patents is the "Facile synthesis of phosphonomethylglycine from phosphonomethyliminodiacetic acid." This process allows for the preparation of phosphonomethylglycine in nearly quantitative yields while eliminating the use of a noble metal co-catalyst. The method utilizes hydrogen peroxide, in combination with activated carbon, to oxidize PMIDA to PMG with high efficiency. The reaction's endpoint is monitored by controlling the concentration of oxygen in the gaseous reaction products. Another significant patent is the "Synthesis of phosphonomethyliminodiacetic acid with reduced effluent." This process involves reacting alkali metal IDA with a strong mineral acid to convert it into soluble IDA phosphite salt, which is then phosphonomethylated.

Career Highlights

Barry A Cullen has worked with prominent companies such as Hampshire Chemical Corporation and W.R. Grace & Co. His experience in these organizations has contributed to his expertise in chemical processes and innovations.

Collaborations

Throughout his career, Barry has collaborated with notable coworkers, including Brian A Parker and Roger R Gaudette. These partnerships have likely enriched his research and development efforts.

Conclusion

Barry A Cullen's contributions to chemical synthesis through his innovative patents and collaborations highlight his role as a significant inventor in the field. His work continues to influence advancements in chemical processes.

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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