- LandOfFree
- Inventors
- Mineral oils: processes and products
- By treatment of solid mineral, e.g., coal liquefaction, etc.
- Chemical modification of solids before hydrogenation
Details
Roy J. Helfinstine
Roy J.
Helfinstine
- Patent Class
Mineral oils: processes and products
- SubClass
By treatment of solid mineral, e.g., coal liquefaction, etc.
- SubSubClass
Chemical modification of solids before hydrogenation
- Specialty
Inventor
- Status
active
Affiliated with
Also associated with
No associations
LandOfFree
Say what you really think
Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.
Rating
Roy J. Helfinstine does not yet have a rating.
At this time, there are no reviews or comments for this inventor.
If you have personal experience with Roy J. Helfinstine, we encourage you to share that experience with our LandOfFree.com community.
Your opinion is very important and Roy J. Helfinstine will most certainly appreciate the feedback.
Rate now
Profile ID: LFUS-PAI-P-823822
All data on this website is collected from public sources.
Our data reflects the most accurate information available at the time of publication.