Forward Citations = 39

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6 inventors (with patents filed for the assignee):

Armand L Davister (3 out of 7 patents)

Engelhard Wilhelm Pavonet (2 out of 2 patents)

Samuel V Houghtaling (1 out of 3 patents)

4. Wilhelm E Pavonet (1 out of 1 patent)

5. Renaud F Quatpers (1 out of 1 patent)

6. Wilhem E Pavonet (1 out of 1 patent)

7 patents: Sort by Forward Citations

1. 4330404 - Multiple cell filter with baffles (1982-05-18),

2. 4252775 - Process for treatment of residues from ferriferous zinc ores (1981-02-24),

3. 4188366 - Manufacture of phosphoric acid (1980-02-12),

4. 4176160 - Process for purifying a zinc sulfate solution (1979-11-27),

5. 4172791 - Multiple cell filter having a gas discharge (1979-10-30),

6. 4129454 - Iron oxide based pigment and process for preparing such a pigment (1978-12-12),

7. 3970741 - Method for purifying phosphoric acid (1976-07-20),

Company Overview

Societe De Prayon is a leading global producer of phosphates and phosphoric acid, serving a range of industries including agriculture, food, and industrial applications. With over 140 years of experience, the company offers high-quality products and innovative solutions for its customers.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 6 2026

7 Patents

#15 in

#338 in Belgium

BE

'Societe De Prayon'

Forward Citations = 39

6 inventors:

Armand L Davister (3 out of 7 patents)

Engelhard Wilhelm Pavonet (2 out of 2 patents)

Samuel V Houghtaling (1 out of 3 patents)

4. Wilhelm E Pavonet (1 out of 1 patent)

5. Renaud F Quatpers (1 out of 1 patent)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: 'Societe De Prayon'. Retrieved from https://idiyas.com/company/societe-de-prayon

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]