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Inventor

Sheryl L. Johnson

Inventor
Sunnyvale, CA, US

Overview

3→
Patents
1992–2020
Patent span
Physics
Primary field (CPC G)

Patents· 3 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 transducer40%
B01JChemical or physical processes, e.g. catalysis or colloid chemistry20%
C07CAcyclic or carbocyclic compounds20%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests20%
PatentTitleYear
10,669,219Process for the preparation of 1,1,2,2-pentafluoropropane20205,144,613'Thermal bulk erasure method for dye polymer optical media'19925,090,008'Erasable recording media'1992

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1992Patents assigned to TANDY CORP (2)· patent assignee history
1992Based in Sunnyvale, CA, US· patent location history
2020Patents assigned to MEXICHEM FLUOR SA DE CV (1)· patent assignee history
2020Based in Cheshire, GB· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
TANDY CORP21992
MEXICHEM FLUOR SA DE CV12020
Locations
LocationPatentsSpan
Sunnyvale, California, US21992
Cheshire, GB12020