Growing community of inventors

Vadnais Heights, MN, United States of America

Roger A Christopherson

Average Co-Inventor Count = 4.03

ph-index = 4

The patent ph-index is calculated by counting the number of publications for which an author has been cited by other authors at least that same number of times.

Forward Citations = 24

Roger A ChristophersonKevin R Seifert (3 patents)Roger A ChristophersonNathan Lee Olson (3 patents)Roger A ChristophersonRebecca L Poindexter (3 patents)Roger A ChristophersonRonald A Drake (2 patents)Roger A ChristophersonLester O Stener (2 patents)Roger A ChristophersonAndrzej M Malewicz (2 patents)Roger A ChristophersonAndrea Jean Asleson (2 patents)Roger A ChristophersonTrent M Fischer (2 patents)Roger A ChristophersonKeith D Anderson (2 patents)Roger A ChristophersonMatthew David Bonner (1 patent)Roger A ChristophersonKenneth C Gardeski (1 patent)Roger A ChristophersonBruce R Mehdizadeh (1 patent)Roger A ChristophersonMichael R Neidert (1 patent)Roger A ChristophersonJoyce A Terlinden (1 patent)Roger A ChristophersonRoger A Christopherson (7 patents)Kevin R SeifertKevin R Seifert (66 patents)Nathan Lee OlsonNathan Lee Olson (20 patents)Rebecca L PoindexterRebecca L Poindexter (12 patents)Ronald A DrakeRonald A Drake (69 patents)Lester O StenerLester O Stener (53 patents)Andrzej M MalewiczAndrzej M Malewicz (49 patents)Andrea Jean AslesonAndrea Jean Asleson (25 patents)Trent M FischerTrent M Fischer (14 patents)Keith D AndersonKeith D Anderson (11 patents)Matthew David BonnerMatthew David Bonner (79 patents)Kenneth C GardeskiKenneth C Gardeski (68 patents)Bruce R MehdizadehBruce R Mehdizadeh (26 patents)Michael R NeidertMichael R Neidert (8 patents)Joyce A TerlindenJoyce A Terlinden (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Medtronic, Inc. (6 from 8,761 patents)

2. Other (1 from 832,966 patents)


7 patents:

1. 11844547 - Medical tools and methods for gaining access to extravascular spaces

2. 10695089 - Medical tools and methods for gaining access to extravascular spaces

3. 10531893 - Extravascular implant tools with open sheath and implant techniques utilizing such tools

4. 10398471 - Implant tools with attachment feature and multi-positional sheath and implant techniques utilizing such tools

5. 9642555 - Subcutaneous lead guidance

6. 9610436 - Implant tools with attachment feature and multi-positional sheath and implant techniques utilizing such tools

7. 5405140 - Family vacation board game

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idiyas.com
as of
1/18/2026
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