Ingenjorsfirman Per-Oskar Persson Ab

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USPTO Granted Patents = 3

Forward Citations = 14

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3 inventors (with patents filed for the assignee):

Per-Oskar Persson (2 out of 5 patents)

Ingemar Froderberg (1 out of 1 patent)

Per O Persson (1 out of 1 patent)

3 patents: Sort by Forward Citations

1. 5927100 - Freezer for a liquid (1999-07-27),

2. 4921602 - Filter for liquids (1990-05-01),

3. 4088796 - Method for making animal feed from manure (1978-05-09),

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USPTO Data Jan 1 1976 - Nov 3 2026

3 Patents

#29 in Helsingborg

#1,605 in Sweden

Helsingborg, Sweden

Ingenjorsfirman Per-Oskar Persson Ab

Forward Citations = 14

3 inventors:

Per-Oskar Persson (2 out of 5 patents)

Ingemar Froderberg (1 out of 1 patent)

Per O Persson (1 out of 1 patent)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Ingenjorsfirman Per-Oskar Persson Ab. Retrieved from https://idiyas.com/company/ingenjorsfirman-per-oskar-persson-ab

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]