Inventor
Thomas I. Bradshaw
Inventor
Afton, MN, US
Overview
Patents· 20 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
G02Bprimary
G02BOptical elements, systems or apparatus27%
Y10TTechnical subjects covered by former us classification13%
E01FAdditional work, such as equipping roads or the construction of platforms, helicopter landing stages, signs, snow fences, or the like10%
G06KGraphical data reading10%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests10%
B60RVehicles, vehicle fittings, or vehicle parts, not otherwise provided for4%
E21DShafts4%
F16BDevices for fastening or securing constructional elements or machine parts together, e.g. nails, bolts, circlips, clamps, clips or wedges4%
G09FDisplaying4%
A01GHorticulture2%
PatentTitleYear
8,892,199'Chemical compound delivery device and method'20146,703,108'Wet retroreflective marking material'20046,127,020'Method of making wet retroreflective marking material'20005,700,077'Line light source including fluorescent colorant'19975,683,746'Patterned pavement markings with upright retroreflectors'19975,670,005'Method for manufacturing improved data display retroreflective sheeting'19975,670,227'Patterned pavement markings with upright retroreflectors'19975,621,571'Integrated retroreflective electronic display'19975,268,789'Retroreflective assembly and process for making same'19934,952,023'Internally illuminated retroreflective sign'19904,714,656'Sheet containing contour-dependent directional image and method for forming the same'19874,708,920'Microlens sheet containing directional half-tone images and method for making the same'19874,691,993'Transparent sheets containing directional images and method for forming the same'19874,650,283'Directionally imaged retroreflective sheeting'19874,645,301'Transparent sheet containing authenticating image and method of making same'19874,634,220'Directionally imaged sheeting'19874,268,118'Sheeting useful as a projection screen'19814,216,180'Reinforcing or sealing solid structures or for anchoring bolts therein and cartridges for use in such method'19804,153,156'Method for reinforcing or sealing solid structures or for anchoring bolts therein and cartridges for use in such method'19794,063,452'Method and device for monitoring vapor concentration at a phase interface'1977Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1977–1997Patents assigned to MINNESOTA MINING & MFG (17)· patent assignee history
1977–1980Based in Shoreview, MN, US· patent location history
1981–1997Based in Afton, MN, US· patent location history
2000–2004Patents assigned to 3M INNOVATIVE PROPERTIES CO (2)· patent assignee history
2000–2004Based in Port Ludlow, WA, US· patent location history
2014Patents assigned to BRADSHAW THOMAS I (1)· patent assignee history
2014Patents assigned to BUCKEYE PHARMACEUTICALS (1)· patent assignee history
2014Patents assigned to KAUFMAN MICHAEL G (1)· patent assignee history
2014Based in Shaker Heights, OH, US· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| MINNESOTA MINING & MFG | 17 | 1977–1997 |
| 3M INNOVATIVE PROPERTIES CO | 2 | 2000–2004 |
| BRADSHAW THOMAS Iself | 1 | 2014 |
| BUCKEYE PHARMACEUTICALS | 1 | 2014 |
| KAUFMAN MICHAEL G | 1 | 2014 |
Locations
| Location | Patents | Span |
|---|---|---|
| Afton, Minnesota, US | 14 | 1981–1997 |
| Shoreview, Minnesota, US | 3 | 1977–1980 |
| Port Ludlow, Washington, US | 2 | 2000–2004 |
| Shaker Heights, OH, US | 1 | 2014 |