Roderick Dennis Herdman

Title: Roderick Dennis Herdman: Innovator in Chemical Processes

Introduction

Roderick Dennis Herdman is a notable inventor based in Staffordshire, GB, with a remarkable portfolio of 10 patents. His work primarily focuses on advancements in chemical processes, particularly in the field of etching solutions and chromium treatments.

Latest Patents

One of Herdman's latest patents is titled "Regeneration of etch solutions containing trivalent manganese in acid media." This patent describes a method for regenerating an etch solution that includes a metastable complex of manganese(III) ions in a strong acid. The process involves destabilizing a portion of the manganese(III) ions, leading to their disproportionation into manganese dioxide and manganese(II) ions. The method consists of three key steps: adding a reducing agent to the solution, allowing the reducing agent to react and dissolve manganese dioxide, and applying an electrical current to regenerate manganese(III) ions in the solution.

Another significant patent is "Passivation of micro-discontinuous chromium deposited from a trivalent electrolyte." This method treats a substrate with a layer deposited from a trivalent chromium electrolyte. It includes providing an anode and using the chromium(III) plated substrate as a cathode in an electrolyte containing a trivalent chromium salt and a complexant. An electrical current is passed between the anode and cathode to passivate the chromium(III) plated substrate, which may be initially plated with a nickel layer.

Career Highlights

Throughout his career, Roderick Herdman has contributed to various companies, including Macdermid Acumen, Inc. His expertise in chemical processes has made him a valuable asset in the industry.

Collaborations

Herdman has collaborated with notable individuals such as Trevor Pearson and Roshan V Chapaneri, further enhancing his innovative contributions to the field.

Conclusion

Roderick Dennis Herdman stands out as an influential inventor in chemical processes, with a strong focus on etching solutions and chromium treatments. His patents reflect significant advancements that contribute to the industry.