Inventor
David L. Canfield
Inventor
Lake Hughes, CA, US
Overview
Patents· 11 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
A61Nprimary
A61NElectrotherapy18%
A61MDevices for introducing media into, or onto, the body9%
F04BPositive-displacement machines for liquids9%
G01BMeasuring length, thickness or similar linear dimensions9%
H01RElectrically-conductive connections9%
A47BTables5%
A61BDiagnosis5%
A61LMethods or apparatus for sterilising materials or objects in general5%
B29CShaping or joining of plastics5%
B65HHandling thin or filamentary material, e.g. sheets, webs, cables5%
PatentTitleYear
9,719,505'Medication pump test device and method of use'20179,388,805'Medication pump test device and method of use'20167,239,921'Housing for an implantable medical device'20077,024,249'Pulsed magnetic control system for interlocking functions of battery powered living tissue stimulators'20066,935,897'Electrical device connector and method therefor'20056,829,508'Electrically sensing and stimulating system for placement of a nerve stimulator or sensor'20046,821,154'Electrical device connector and method therefor'20046,746,521'Fragrant medium container'20045,827,384'Process for bonding webs'19985,032,957'Cabinet light'19914,093,120'Railroad crossing structure'1978Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1978Patents assigned to PARK RUBBER CO (1)· patent assignee history
1978Based in Libertyville, IL, US· patent location history
1991Patents assigned to CANFIELD DAVID (1)· patent assignee history
1991Based in Pataskala, OH, US· patent location history
1998Based in Kingsley, PA, US· patent location history
2004–2007Patents assigned to MANN ALFRED E FOUND SCIENT RES (5)· patent assignee history
2004Patents assigned to FURNACE FRESH INC (1)· patent assignee history
2004–2017Based in Lake Hughes, CA, US· patent location history
2004Based in Columbus, OH, US· patent location history
2016–2017Patents assigned to MEDTRONIC MINIMED INC (2)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| MANN ALFRED E FOUND SCIENT RES | 5 | 2004–2007 |
| MEDTRONIC MINIMED INC | 2 | 2016–2017 |
| CANFIELD DAVIDself | 1 | 1991 |
| FURNACE FRESH INC | 1 | 2004 |
| PARK RUBBER CO | 1 | 1978 |
Locations
| Location | Patents | Span |
|---|---|---|
| Lake Hughes, California, US | 7 | 2004–2017 |
| Columbus, OH, US | 1 | 2004 |
| Kingsley, Pennsylvania, US | 1 | 1998 |
| Pataskala, OH, US | 1 | 1991 |
| Libertyville, Illinois, US | 1 | 1978 |