This inventor holds 2 USPTO granted patents. Top assignees: Federal Cartridge Company, Federal-Hoffman, Inc.. Active years: 1997-1999.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile
Company Filing History:
Years Active: 1997-1999
Title: Innovations of John M Melberg
Introduction
John M Melberg is a notable inventor based in Andover, MN (US). He has made significant contributions to the field of ammunition technology, particularly in developing lead-free and heavy-metal-free priming compositions. With a total of 2 patents, his work reflects a commitment to safety and environmental considerations in ammunition manufacturing.
Latest Patents
Melberg's latest patents include a lead-free, heavy-metal-free rim-fire priming composition. This innovative composition consists primarily of diazodinitrophenol (DDNP) as a primary explosive, combined with a low percentage of tetracene as a secondary sensitization explosive. The formulation also includes a high percentage of ground glass and a very low percentage of an effective lead-free, heavy-metal-free oxidizer. A strong binder is added to ensure the composition's installation and retention within the rim of the casings. Additionally, a dye is incorporated to facilitate visual inspection after installation. The preferred mix comprises 29.8% DDNP, 4.0% tetracene, 57.0% ground glass, 7.5% potassium nitrate, 1.5% gum tragacanth, and 0.2% Prussian Blue.
Another significant patent is for a non-toxic rim-fire primer. This mix utilizes cupric azide as the primary explosive, replacing lead styphnate. The cupric azide is combined with nitrocellulose, tetracene, fine particles of ground glass, and a binder, typically gum tragacanth. This formulation achieves the necessary sensitivity, stability, and non-hygroscopicity for regular commercial rim-fire ammunition. The preferred percentages include 10-36% cupric azide, 5-10% tetracene, 15-30% nitrocellulose, 20-50% glass, and 1-2% gum.
Career Highlights
Throughout his career, Melberg has worked with reputable companies such as Federal-Hoffman, Inc. and Federal Cartridge Company. His experience in these organizations has contributed to his expertise in ammunition technology and innovation.
Collaborations
Melberg has collaborated with notable coworkers, including Jack A Erickson and Robert L Kramer. Their combined efforts have likely advanced the development of innovative ammunition solutions.
Conclusion
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile