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For the Inventor, By the Inventor

Zachary, LA, United States of America

Donald W Calvin

This inventor holds 7 USPTO granted patents. Top assignee: The Dow Chemical Company. Active years: 1977-1986.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Donald W Calvin. Retrieved from https://idiyas.com/inventor/donald-w-calvin

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

USPTO Granted Patents = 7

% Patents Active = 100.0

Average Co-Inventor Count = 1.6

ph-index = 4

Forward Citations = 46(Granted Patents)


Location History:

  • Zachary, LA (US) (1977 - 1979)
  • Midland, MI (US) (1985)
  • Lake Jackson, TX (US) (1983 - 1986)

Company Filing History:

goldMedal7 out of 7,680 
 
The Dow Chemical Company
 patents

Years Active: 1977-1986

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7 patents (USPTO):Explore Patents
1. 4585801 - Re-use of fluoropolymer membranes (1986-04-29),
2. 4508538 - Recovery of fumed SiO.sub.2 (1985-04-02),
3. 4387249 - Process for the manufacture of diethylenetriamine (1983-06-07),
4. 4151078 - Removing oil from water (1979-04-24),
5. 4059680 - Method of preparing fumed SiO.sub.2 (1977-11-22),
6. 4054689 - Method of preparing hydrophobic silica (1977-10-18),
7. 4008130 - Method for distilling a ternary azeotrope of fluorosilicic acid, (1977-02-15),

Title: The Innovative Contributions of Donald W. Calvin

Introduction

Donald W. Calvin is a notable inventor based in Zachary, Louisiana, with a remarkable portfolio of seven patents. His work primarily focuses on advancements in materials science, particularly in the field of fluoropolymer membranes and silica recovery.

Latest Patents

Among his latest patents, Calvin has developed a method for the re-use of fluoropolymer membranes. This innovative process involves salvaging used or contaminated pieces of fluoropolymer materials by particulating them into powders, granules, or fibers. The particulated material is then treated to cleanse or modify it for subsequent applications. Another significant patent is the recovery of fumed SiO₂, which outlines a method for recovering fumed hydrophobic silica produced by the flame hydrolysis of a ternary azeotrope. This method includes passing the silica through a nonclassifying agglomerator and separating it from the product stream using a cyclone separator.

Career Highlights

Calvin's career is marked by his association with The Dow Chemical Company, where he has made significant contributions to the field of chemical engineering and materials science. His innovative approaches have not only advanced the company's research but have also contributed to sustainable practices in material reuse.

Collaborations

Throughout his career, Calvin has collaborated with esteemed colleagues such as Joel F. Leathers and Robert M. Harnden. These collaborations have fostered a creative

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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