Littleton, MA, United States of America

Still River Systems Incorporated


USPTO Granted Patents = 7

% Expired Patents = 28.6


Trademarks = 2

Forward Citations = 1,085

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11 inventors (with patents filed for the assignee):

goldMedal Kenneth P Gall (5 out of 28 patents)

silverMedal Alan P Sliski (4 out of 30 patents)

bronzeMedal Leslie Bromberg (1 out of 145 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:

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 based on public USPTO records.

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USPTO Data Jan 1 1976 - Oct 6 2026

7 Patents

#7 in Littleton, MA

#2,305 in Massachusetts

#39,879 in US

Littleton, MA (US)
Littleton, MA, United States of America
Forward Citations = 1,085

11 inventors:

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