Research/Patents/US 6849855
US 6849855

METHOD FOR MARKING AND IDENTIFYING OBJECTS COATED WITH UP-CONVERSION MATERIAL

Assignee

Filed

Feb 12, 1993

Granted

Feb 1, 2005

Location

LOS ALAMITOS CA US

35 USC §181 Secrecy Order

Imposed

Jul 28, 1993

Rescinded

Sep 26, 2003

Duration

10 years, 2 months

Inventor

  • 1I-FU SHIH
Back to patent indexSource: USPTO 35 USC §181 secrecy order records