This inventor holds 14 USPTO granted patents and 4 published patent applications and 3 EPO patents. Top assignees: Pt Gem Indonesia New Energy Materials, Pt Esg New Energy Material, Gem Co., Ltd.. Active years: 2025-2026.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile
Company Filing History:
13 out of 22 
11 out of 20 
10 out of 27 Years Active: 2025-2026
Title: The Innovative Contributions of Evan Wahyu Kristiyanto
Introduction
Evan Wahyu Kristiyanto is a prominent inventor based in Jakarta, Indonesia. He has made significant contributions to the field of hydrometallurgy, particularly in the treatment of laterite nickel ore. With a total of nine patents to his name, Kristiyanto's work showcases his dedication to innovation and sustainable practices in material processing.
Latest Patents
Kristiyanto's latest patents include a treatment method for laterite nickel ore by curing and roasting-water leaching-atmospheric pressure acid leaching. This method involves several steps, including mixing laterite nickel ore dry powder with concentrated sulfuric acid and sodium fluoride, followed by curing and roasting under a reducing atmosphere. The process results in a cured material that undergoes water leaching and atmospheric pressure acid leaching to obtain valuable solutions and by-products. Another notable patent is a method for continuously preparing mixed hydroxide precipitate from laterite nickel ore by hydrometallurgy. This method utilizes primary-precipitated mixed hydroxide precipitate particles as crystal nuclei, allowing for controlled growth and improved sedimentation effects.
Career Highlights
Throughout his career, Kristiyanto has worked with several companies, including PT ESG New Energy Material and PT QMB New Energymaterials. His experience in these organizations has allowed him to apply his innovative ideas in practical settings, contributing to advancements in energy materials and processing techniques.
Collaborations
Kristiyanto has collaborated with notable professionals in his field, including Kaihua Xu and Satryo Soemantri Brodjonegoro. These collaborations have further enriched his research and development efforts, leading to impactful innovations.
Conclusion
Evan Wahyu Kristiyanto's work exemplifies the spirit of innovation in the field of hydrometallurgy. His patents and career achievements reflect his commitment to advancing sustainable practices in material processing. His contributions are poised to have a lasting impact on the industry.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile