Inventor
John A. Barkley
Inventor
Longmont, CO, US
Overview
Patents· 10 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
G11Bprimary
G11BInformation storage based on relative movement between record carrier and transducer50%
G03GElectrography14%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests14%
B32BLayered products, i.e. products built-up of strata of flat or non-flat, e.g. cellular or honeycomb, form7%
B41JTypewriters7%
B60JWindows, windscreens, non-fixed roofs, doors, or similar devices for vehicles7%
PatentTitleYear
7,777,985'Transport method and apparatus for cartridge library utilizing cam slot and follower for moving a robot carriage'20107,777,986'Multi-dimensional transport method and drive subsystems in a cartridge library apparatus'20107,180,702'Data cartridges handler including a ring-shaped carousel and a picker within the inner periphery of the carousel'20076,871,898'Soft cover for vehicles and process for making'20055,892,750'Multi-ported robotic shuttle for cartridge retrieval and insertion in a storage library subsystem'19995,867,458'Magazine for holding computer data storage cartridges'19995,815,340'Apparatus and methods for cartridge retrieval and insertion in a storage library subsystem including a robotic shuttle having a sole rocker beam'19984,265,998'Electrophotographic photoreceptive background areas cleaned by backcharge process'19814,255,042'Light pipe for accurate erasure of photoconductor charge'19814,037,264'Magnetic head housing with wedge locking means'1977Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1977–1981Patents assigned to IBM (3)· patent assignee history
1977–1981Based in Boulder, CO, US· patent location history
1998–1999Patents assigned to BREECE HILL TECHNOLOGIES INC (2)· patent assignee history
1998–2010Based in Longmont, CO, US· patent location history
1999Patents assigned to BREECE HILL TECHNOLOGIES IN C (1)· patent assignee history
2005Patents assigned to OMNOVA SOLUTIONS INC (1)· patent assignee history
2005Based in Columbus, MS, US· patent location history
2010Patents assigned to TANDBERG DATA CORP (2)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| IBM | 3 | 1977–1981 |
| BREECE HILL TECHNOLOGIES INC | 2 | 1998–1999 |
| TANDBERG DATA CORP | 2 | 2010 |
| BREECE HILL TECHNOLOGIES IN C | 1 | 1999 |
| OMNOVA SOLUTIONS INC | 1 | 2005 |
Locations
| Location | Patents | Span |
|---|---|---|
| Longmont, CO, US | 6 | 1998–2010 |
| Boulder, CO, US | 3 | 1977–1981 |
| Columbus, MS, US | 1 | 2005 |