Inventor

Efren Guillermo Delos Santos

Inventor
Nanuet, NY, US

Overview

20→
Patents
1996–2018
Patent span
Human necessities
Primary field (CPC A)

Patents· 20 as inventor

Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.

C07Dprimary
C07DHeterocyclic compounds48%
A61PSpecific therapeutic activity of chemical compounds or medicinal preparations30%
A61KPreparations for medical, dental or toiletry purposes20%
C07CAcyclic or carbocyclic compounds3%

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1996–2003Patents assigned to AMERICAN CYANAMID CO (12)· patent assignee history
1996–2018Based in Nanuet, NY, US· patent location history
2012–2018Patents assigned to WYETH LLC (7)· patent assignee history
2012–2013Patents assigned to AYRAL-KALOUSTIAN SEMIRAMIS (2)· patent assignee history
2012–2013Patents assigned to CHEN ZECHENG (2)· patent assignee history
2013–2018Patents assigned to PFIZER (3)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
AMERICAN CYANAMID CO121996–2003
WYETH LLC72012–2018
PFIZER32013–2018
AYRAL-KALOUSTIAN SEMIRAMIS22012–2013
CHEN ZECHENG22012–2013
Locations
LocationPatentsSpan
Nanuet, New York, US201996–2018