Company Badge
USPTO Data Jan 1 1976 - Oct 27 2026
7 Patents
#7 in Littleton, MA
#2,307 in Massachusetts
#39,950 in US
Still River Systems Incorporated
Forward Citations = 1,085
11 inventors:
Littleton, MA, United States of America
Still River Systems Incorporated
Calculating rank
% Expired Patents = 28.6
EPO Patents = 2
Trademarks = 2
Forward Citations = 1,085
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11 inventors (with patents filed for the assignee):
Kenneth P Gall (5 out of 28 patents)
Alan P Sliski (4 out of 30 patents)
Leslie Bromberg (1 out of 146 patents)
4. Miles S Wagner (1 out of 6 patents)
5. Timothy A Antaya (1 out of 17 patents)
6. Stanley J Rosenthal (1 out of 17 patents)
7. Michael J Ahearn (1 out of 13 patents)
8. James M Stark (1 out of 3 patents)
9. Joel Henry Schultz (1 out of 5 patents)
10. Joseph V Minervini (1 out of 6 patents)
11. Leonard Myatt (1 out of 3 patents)
7 patents:
Company Overview
Still River Systems, now a part of ProTom International, is a leading developer of proton therapy systems for cancer treatment. Their flagship product, the Monarch250, offers precise and efficient proton beam delivery for improved patient outcomes. With a focus on innovation and patient care, Still River Systems is dedicated to advancing cancer treatment technology.
Profile summary synthesized from public USPTO records and patent filings.
IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Still River Systems Incorporated. Retrieved from https://idiyas.com/company/still-river-systems
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile
Data Sources: USPTO Patent Grant XML, Patent Center, EPO & CIPO • Normalized by IDiyas Innovation Graph. Methodology & provenance architecturePlease report any incorrect information to [email protected]
Data Sources: USPTO Patent Grant XML, Patent Center, EPO & CIPO • Normalized by IDiyas Innovation Graph. Methodology & provenance architecturePlease report any incorrect information to [email protected]
2 patents (EPO):
Data Sources: USPTO Patent Grant XML, Patent Center, EPO & CIPO • Normalized by IDiyas Innovation Graph. Methodology & provenance architecturePlease report any incorrect information to [email protected]