% Expired Patents = 25.0

Forward Citations = 26

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7 inventors (with patents filed for the assignee):

Ralph A Stearns (3 out of 100 patents)

Louis Dicristofano (1 out of 1 patent)

Russell Radant (1 out of 1 patent)

4. Miles H Mushlin (1 out of 1 patent)

5. Richard C Caponi (1 out of 1 patent)

6. Steven E Negrete (1 out of 1 patent)

7. Malcolm T Duffee (1 out of 1 patent)

8 patents: Sort by Forward Citations

1. 10974908 - Methods and systems for controlling a vibratory feeder (2021-04-13),

2. 9856902 - Extruded metal insert (2018-01-02),

3. 7214021 - Helical grooved pin (2007-05-08),

4. 5335779 - Vibratory feeder (1994-08-09),

5. 5320479 - Packet feeding and stacking system (1994-06-14),

6. 5285890 - Vibratory feeder (1994-02-15),

7. 4872603 - Insert installation machine (1989-10-10),

8. 4856697 - Manual pin driver (1989-08-15),

Company Overview

Spirol International Corporation is a leading manufacturer of engineered components for a wide range of industries, specializing in fastening solutions such as pins, inserts, and compression limiters. With a commitment to precision engineering and innovative design, Spirol has established a global reputation for high-quality products and exceptional customer service.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 13 2026

8 Patents

#1 in Danielson, CT

#750 in Connecticut

#35,924 in US

Danielson, CT, United States of America

Spirol International Corporation

Forward Citations = 26

7 inventors:

Ralph A Stearns (3 out of 100 patents)

Louis Dicristofano (1 out of 1 patent)

Russell Radant (1 out of 1 patent)

4. Miles H Mushlin (1 out of 1 patent)

5. Richard C Caponi (1 out of 1 patent)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Spirol International Corporation. Retrieved from https://idiyas.com/company/spirol-international

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]