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For the Inventor, By the Inventor

Stockholm, Sweden

Defibrator Aktiebolag

Calculating rank
USPTO Granted Patents = 11

Forward Citations = 82

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9 inventors (with patents filed for the assignee):

goldMedal Johan G Johansson (4 out of 4 patents)

silverMedal Willard Falkinger (2 out of 3 patents)

bronzeMedal Per Anders Asberg (2 out of 3 patents)

4.  Inge J Johansson (2 out of 3 patents)

5.  Rolf B Reinhall (1 out of 24 patents)

6.  Mats Floden (1 out of 2 patents)

7.  Nils G Virving (1 out of 1 patent)

8.  Carl-Olov B Ranzen (1 out of 1 patent)

9.  Knut O Danielsson (1 out of 2 patents)


11 patents:

1. 4355768 - Rotary grinding disc for defibrating apparatus (1982-10-26),
2. 4355767 - Device in grinding apparatus (1982-10-26),
3. 4298425 - Method and apparatus for refining lignocellulose-containing material to (1981-11-03),
4. 4274602 - Rotary grinding disc for defibrating apparatus (1981-06-23),
5. 4220290 - Conveyor device for feeding lignocellulosic material to a disc-type (1980-09-02),
6. 4204689 - Sealing device for shafts (1980-05-27),
7. 4198302 - Apparatus for relieving blockage of the pulp discharge passage in a (1980-04-15),
8. 4148439 - Method and device for controlling the energy consumption in a pulp (1979-04-10),
9. 4078674 - Apparatus for manufacture of sheets or board units from cellulose or (1978-03-14),
10. 4073442 - Electrically controlled system for regulating the grinding space in a (1978-02-14),
11. 4017246 - Conveyor plate for wet sheets or dry sheets (1977-04-12),
Company Overview
Defibrator Aktiebolag, based in Stockholm, specializes in advanced technology solutions for the pulp and paper industry. The company focuses on developing innovative processes and equipment that enhance the efficiency and sustainability of fiber production. With a commitment to research and development, Defibrator aims to lead in the field of fiber technology, providing solutions that meet the evolving needs of the industry while promoting environmental responsibility. Its expertise positions it as a key player in the global market for sustainable materials.
Profile summary synthesized from public USPTO records and patent filings.

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USPTO Data Jan 1 1976 - Oct 27 2026

11 Patents

#78 in Stockholm

#557 in Sweden

#51,831 in the World

Stockholm, SE
Stockholm, Sweden

Defibrator Aktiebolag

Forward Citations = 82

9 inventors:

goldMedal Johan G Johansson (4 out of 4 patents)

silverMedal Willard Falkinger (2 out of 3 patents)

bronzeMedal Per Anders Asberg (2 out of 3 patents)

4.  Inge J Johansson (2 out of 3 patents)

5.  Rolf B Reinhall (1 out of 24 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Defibrator Aktiebolag. Retrieved from https://idiyas.com/company/defibrator-aktiebolag

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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