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For the Inventor, By the Inventor

Riverside, CA, United States of America

Bear Medical Systems, Inc.


USPTO Granted Patents = 20

Forward Citations = 1,914

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23 inventors (with patents filed for the assignee):

goldMedal Raymond A Ellestad (3 out of 4 patents)

silverMedal Samir M Chaoui (3 out of 3 patents)

bronzeMedal Douglas F DeVries (2 out of 36 patents)

4.  Alberto Ruiz-Vela (2 out of 13 patents)

5.  Finn Sveen (2 out of 4 patents)

6.  Arieh S Halpern (2 out of 2 patents)

7.  Charles W Cutler (2 out of 2 patents)

8.  Stanley E Fry (2 out of 11 patents)

9.  Claude C Hurd (2 out of 4 patents)

10.  Harold U Bartels (2 out of 6 patents)

11.  James W Casparie (1 out of 1 patent)

12.  Ioan T Oltean (1 out of 1 patent)

13.  Thomas P Westfall (1 out of 1 patent)

14.  Anthony J Caterina (1 out of 1 patent)

15.  Clyde R Visser (1 out of 1 patent)


20 patents:

1. 5970801 - Variable orifice flow sensor (1999-10-26),
2. 5540220 - Pressure-limited, time-cycled pulmonary ventilation with volume-cycle (1996-07-30),
3. 5460039 - Flow sensor system (1995-10-24),
4. 5331995 - Flow control system for medical ventilator (1994-07-26),
5. 5263369 - Flow sensor system and method (1993-11-23),
6. 5107831 - Ventilator control system using sensed inspiratory flow rate (1992-04-28),
7. 5069220 - Measurement of gas concentration in exhaled breath (1991-12-03),
8. 4702240 - Demand-responsive gas blending system for medical ventilator (1987-10-27),
9. 4621632 - Humidifier system (1986-11-11),
10. 4602653 - Electronically-controlled gas blending system (1986-07-29),
11. 4527557 - Medical ventilator system (1985-07-09),
12. 4494252 - Laryngeal prosthesis (1985-01-22),
13. 4489440 - Pressure-compensated pneumatic speech simulator (1984-12-18),
14. 4476707 - Gas flow measurement with detented chopper valve (1984-10-16),
15. 4459982 - Servo-controlled demand regulator for respiratory ventilator (1984-07-17),
Company Overview
Bear Medical Systems, Inc. is a company based in Riverside, California, specializing in the development and manufacturing of advanced medical devices. The organization focuses on innovative solutions that enhance patient care and streamline healthcare processes. With a commitment to quality and technological advancement, Bear Medical Systems aims to address critical needs in the medical field, contributing to improved outcomes and efficiency in healthcare delivery.
Profile summary synthesized from public USPTO records and patent filings.

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USPTO Data Jan 1 1976 - Oct 6 2026

20 Patents

#6 in Riverside, CA

#3,933 in California

#16,382 in US

#31,233 in the World

Riverside, CA (US)
Riverside, CA, United States of America

Bear Medical Systems, Inc.

Forward Citations = 1,914

23 inventors:

goldMedal Raymond A Ellestad (3 out of 4 patents)

silverMedal Samir M Chaoui (3 out of 3 patents)

bronzeMedal Douglas F DeVries (2 out of 36 patents)

4.  Alberto Ruiz-Vela (2 out of 13 patents)

5.  Finn Sveen (2 out of 4 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Bear Medical Systems, Inc.. Retrieved from https://idiyas.com/company/bear-medical-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]
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