Inventor
Per Olov G. Risman
Inventor
Harryda, SE
Overview
Patents· 26 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
H05Bprimary
H05BElectric heating54%
B01JChemical or physical processes, e.g. catalysis or colloid chemistry10%
H01PWaveguides5%
H01QAntennas, i.e. radio aerials5%
A23JProtein compositions for foodstuffs2%
A23LFoods, foodstuffs or non-alcoholic beverages, not otherwise provided for2%
A61BDiagnosis2%
A61LMethods or apparatus for sterilising materials or objects in general2%
A61NElectrotherapy2%
C02FTreatment of water, waste water, sewage, or sludge2%
PatentTitleYear
10,186,780Microwave antenna applicator20198,269,190'Method and system for achieving optimal UV water disinfection'20127,964,828'Microwave heating applicator'20117,230,217'Hybrid rectangular heating applicators'20077,015,441'Microwave heating apparatus'20066,960,747'Microwave applicator system'20056,933,482'Microwave heating apparatus'20056,833,537'Microwave system for heating voluminous elongated loads'20046,630,654'Microwave heating apparatus'20036,614,010'Microwave heating apparatus'20036,333,496'Microwave feeding of an oven cavity'20015,834,744'Tubular microwave applicator'19985,828,040'Rectangular microwave heating applicator with hybrid modes'19985,632,921'Cylindrical microwave heating applicator with only two modes'19975,237,139'Microwave oven, a method for excitation of the cavity of a microwave oven, and a wave guide device for carrying out the method'19934,855,554'Arrangement in a microwave oven'19894,849,592'Feeding arrangement for a microwave oven'19894,841,111'Microwave oven with improved defrosting mode'19894,816,632'Multi-resonant microwave oven having an improved microwave distribution'19894,743,725'Coaxial line microwave heating applicator with asymmetrical radiation pattern'19884,485,564'Method of carrying out the drying of wooden objects'19844,392,039'Dielectric heating applicator'19834,276,462'Microwave heating apparatus'19814,237,145'Method of preparing foodstuffs containing coagulating proteins and a device for performing the method'19804,027,133'Microwave radiators'19774,011,427'Electric supply circuits for a microwave oven'1977Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1977–1981Patents assigned to HUSQVARNA AB (3)· patent assignee history
1977–1984Based in Huskvarna, SE· patent location history
1988–2019Based in Harryda, SE· patent location history
1989Patents assigned to PHILIPS CORP (4)· patent assignee history
1989Based in Herryda, SE· patent location history
1993Based in Sandsjon, SE· patent location history
2003–2006Patents assigned to PERSONAL CHEMISTRY I UPPSALA (5)· patent assignee history
2003Based in Hrryda, SE· patent location history
2007–2011Patents assigned to EXH LLC (2)· patent assignee history
2012–2019Patents assigned to RISMAN PER OLOV (2)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| PERSONAL CHEMISTRY I UPPSALA | 5 | 2003–2006 |
| PHILIPS CORP | 4 | 1989 |
| HUSQVARNA AB | 3 | 1977–1981 |
| EXH LLC | 2 | 2007–2011 |
| RISMAN PER OLOVself | 2 | 2012–2019 |
Locations
| Location | Patents | Span |
|---|---|---|
| Harryda, SE | 13 | 1988–2019 |
| Huskvarna, SE | 6 | 1977–1984 |
| Herryda, SE | 4 | 1989 |
| Hrryda, SE | 2 | 2003 |
| Sandsjon, SE | 1 | 1993 |