Call us today. We just might be the perfect fit for you.

Powder Metal Innovations

Turning the Impossible Into the New Benchmark

We define ourselves as the leading edge of PM technology, and we work every day to justify that title. Innovation is an essential piece of Keystone culture because it directly relates to our fundamental principle: doing what is best to serve our customers.

When we believe in a new idea, we never wonder whether it is possible. Instead, we commit to making it a reality.

This outlook, combined with a disciplined amount of measured risk, has expanded both our capabilities and the importance of powdered metal in manufacturing.

The results are clear with Keystone pioneering:

  • Proprietary material blends offer tighter dimensional control
  • Production processes produce near full density high-strength metal parts
  • Delivery of finished system assemblies adds value
  • Exclusive automation equipment adds process efficiency
  • 100% inline testing processes assures product quality and performance
  • Automated shop-floor machining reduces cost
  • In-house tooling design and manufacture improves responsiveness and process control
  • Custom press design and construction, including our own 1,650 ton CNC press, provide increased capabilities

We have witnessed material systems innovations lead to advanced processing abilities, which in turn open new product markets. In the same way, we spread our culture of innovation by encouraging every generation at Keystone to see the current state-of-the-art as only a starting point. By empowering young engineers to tackle new challenges, and giving them the support they need to succeed, we secure our future as the company that will always provide unmatched service and quality for customers.

Contact us for new ways to improve your production through powder metal innovations. We look forward to exceeding your expectations.


Patent Number Date of Patent Inventors Patent Name
2,420,531 Canadian 04/01/2008 John C. Kosco, St. Marys Method for Producing Powdered Metal Materials
5,256,184 10/26/1993 John C. Kosco, St. Marys
William Neumann, Lakewood, Ohio
Machinable and Wear Resistant Valve Seat Insert Alloy
5,613,180 03/18/1997 John C. Kosco, St. Marys High Density Ferrous Powder Metal Alloy
5,864,071 01/26/1999 John C. Kosco, St. Marys Powder Ferrous Metal Compositions Containing Aluminum
6,044,555 04/04/2000 Nedward A. Jacob, St. Marys;
Jerome E. Muroski, Johnsonburg
Method for Producing Fully Dense Powdered Metal Helical Gear
6,277,045 08/21/2001 Nicole M. Waters Scheuer,
Utica; Mahlon C. Smith, IV,
Milford; Valentin I. Kavnatsky,
West Bloomfield; Robert B.
Deady; Plymouth, Steven S.
Filipovski, Canton, all of MI;
Reinhard Koch, Wachenroth,
DE; Barry Kline, DuBois, PA
Thin Profile Cam Sprocket with Integrated Timing Target
6,338,747 01/15/2002 John C. Kosco, St. Marys Method for Producing Powder Metal Materials
6,473,964 11/05/2002 Gary L. Anderson, St. Marys;
John C. Kosco, St. Marys
Method of Fabricating Camshafts
6,485,540 11/26/2002 John C. Kosco, St. Marys Method for Producing Powder Metal Material
6,592,809 7/15/2003 Gary L. Anderson, St. Marys
Jerome E. Muroski, St. Marys
Method for Forming Powder Metal Gears
6,630,101 10/7/2003 Gary L. Anderson, St. Marys Method for Producing Powder Metal Gears
6,793,705 9/21/2004 John C. Kosco, St. Marys Powder Metal Materials Having High Temperature Wear and Corrosion Resistance
6,833,018 12/21/2004 John C. Kosco, St. Marys Powder Metal Materials Including Glass
7,364,803 4/29/08 Gary L. Anderson, St. Marys High Density Dual Helical Gear and Method for Manufacture Thereof
7,416,696 8/26/08 John C. Kosco, Peter G.
Imbrogno,  St. Marys
Powder Metal Materials and Parts and Methods of Making the Same
7,854,995 12/21/10 Gary L. Anderson, St. Marys High Density Dual Helical Gear
7,794,551 9/14/10 Peter G. Imbrogno, DuBois
John C. Kosco, St. Marys
Carburization of Metal Articles
8,444,781 5/21/13 Gary L. Anderson Method of Strengthening Metal Parts Through Ausizing