Hagersten, Sweden

Claes Granfelt

This inventor holds 4 USPTO granted patents. Top assignee: Other. Active years: 1993-2000.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Claes Granfelt. Retrieved from https://idiyas.com/inventor/claes-granfelt

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile


% Patents Active = 100.0

Average Co-Inventor Count = 1.2

ph-index = 3

Forward Citations = 18(Granted Patents)


Location History:

  • 57 Hagersten, SE (1993 - 1994)
  • Tyreso, SE (1999)
  • 02 Tyreso, SE (2000)

Company Filing History:

goldMedal4 out of 834,570 
Other
 patents

Years Active: 1993-2000

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4 patents (USPTO):Explore Patents

Title: Innovations by Claes Granfelt

Introduction

Claes Granfelt is a notable inventor based in Hagersten, Sweden. He has made significant contributions to the field of safety devices and shutoff valves, holding a total of 4 patents. His work focuses on enhancing safety and efficiency in gas systems.

Latest Patents

One of Granfelt's latest inventions is a safety device against ruptures in gas pipes. This device features a housing with a cavity and a plunger that moves within the cavity. The plunger has parts that engage with the wall of the cavity and two influencing surfaces of different sizes. The smaller surface communicates with a main pipe from a gas source, while the larger surface connects to a control pipe. The plunger's movement influences the gas flow in the main pipe and indicates any pressure drop in the control pipe.

Another significant patent is an improved shutoff valve that incorporates an inverted stem/seat design. This valve includes a removable cartridge with a stem designed to feature a high-performance polymer tip. This design reduces the likelihood of damage to the valve seating area, making replacement quick and easy if the soft tip becomes damaged. The innovative design ensures that the pressurized gas works in unison with the threaded stem tip, enhancing the valve's functionality.

Career Highlights

Throughout his career, Claes Granfelt has focused on developing innovative solutions that address safety concerns in gas systems. His patents reflect a commitment to improving the reliability and safety of gas flow management.

Collaborations

Claes has collaborated with notable professionals in his field, including Lloyd G Wass and Kurt L Drewelow. Their combined expertise has contributed to the successful development of his innovative patents.

Conclusion

Claes Granfelt's contributions to the field of gas safety devices and shutoff valves demonstrate his dedication to innovation. His patents not only enhance safety but also improve the efficiency of gas systems.

Profile summary based on public USPTO records.
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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