The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 22, 1999
Filed:
Jul. 15, 1997
David J Hedberg, Menlo Park, CA (US);
Stuart L Carp, Menlo Park, CA (US);
Stirling S Dodd, San Jose, CA (US);
Samual H Maslak, Woodside, CA (US);
Bhaskar S Ramamurthy, San Jose, CA (US);
Daniel E Need, Mountain View, CA (US);
John A Hossack, Palo Alto, CA (US);
Acuson Corporation, Mountain View, CA (US);
Abstract
An improvement to the method for harmonic imaging including the steps of (a) transmitting ultrasonic energy at a fundamental frequency and (b) receiving reflected ultrasonic energy at a harmonic of the fundamental frequency is provided. For the improvement, the transmitting step includes the step of transmitting a uni-polar waveform or a waveform characterized by an amplitude change rate of 8 or fewer times pre carrier cycle, said waveform comprising an envelope shape rising gradually to a respective maximum value and falling gradually from the respective maximum value.