This inventor holds 3 USPTO granted patents and 2 published patent applications. Top assignees: Isl Ventures, Inc., Other. Active years: 1987-1992.
Company Filing History:
2 out of 2 
1 out of 834,453 Years Active: 1987-1992
Title: Innovations and Contributions of Steven G Axen
Introduction
Steven G Axen is an accomplished inventor based in Golden, Colorado. He holds a total of 3 patents that showcase his expertise in the field of metal extraction and environmental remediation. His innovative approaches have contributed significantly to advancements in these areas.
Latest Patents
One of Axen's notable patents is a process for extracting metal values from ores. This method involves solubilizing metal values from ore using a lixiviant with a pH ranging from 5 to 8, which consists of an aqueous solution of a chloride salt and a hypochlorite salt. To enhance the process, cyanuric acid may be added to retard the decomposition of the lixiviant. In an alternative embodiment, any remaining hypochlorite ions can be eliminated by introducing hydrogen peroxide or a reducing agent to the pregnant lixiviant. The recovery of metal values is achieved through reduction using carbon, electrowinning, or other conventional techniques. Additionally, for the extraction of gold or silver, finely ground ore containing sulfides or carbonaceous material is utilized to reduce any remaining hypochlorite ions and precipitate the metal values from the lixiviant. The lixiviant can be regenerated through electrolysis or by adding hypochlorite salt.
Another significant patent by Axen is a method of isolating contaminated geological formations and soils. This method involves encapsulating the contaminated formation with impermeable barriers. A grid of wells is drilled into the formation, and a horizontal barrier is created below the contaminated area by forming horizontally-oriented fractures filled with polymer. If necessary, a horizontal barrier may also be established above the contaminated formation. Furthermore, a ring of boundary wells is drilled around the contaminated area, and the strata around each boundary well are fractured to inject polymer, forming a vertical barrier. To further mitigate the migration of pollutants, water may be injected under pressure into guard wells situated between the contaminated formation and the barriers.
Career Highlights
Throughout his career, Steven G Axen has worked with various companies, including Isl Ventures, Inc. His contributions to the field have been recognized and valued, showcasing his commitment to innovation and environmental protection.
Collaborations
Axen has collaborated with notable individuals such as Ray V Huff and David R Baughman. These partnerships have further enriched his work and expanded the impact of his inventions.