US 11,751,289 B2
Integrated heater and method of manufacture
Kevin Ptasienski, O'Fallon, MO (US); Patrick Margavio, Columbia, MO (US); and Kevin Smith, Columbia, MO (US)
Assigned to WATLOW ELECTRIC MANUFACTURING COMPANY, St. Louis, MO (US)
Filed by Watlow Electric Manufacturing Company, St. Louis, MO (US)
Filed on Jun. 3, 2021, as Appl. No. 17/338,229.
Application 17/338,229 is a continuation of application No. 15/986,441, filed on May 22, 2018, granted, now 11,083,050.
Application 15/986,441 is a continuation in part of application No. 15/819,028, filed on Nov. 21, 2017, granted, now 10,681,778, issued on Jun. 9, 2020.
Prior Publication US 2021/0298125 A1, Sep. 23, 2021
Int. Cl. H05B 3/18 (2006.01); H05B 3/28 (2006.01)
CPC H05B 3/18 (2013.01) [H05B 3/283 (2013.01); H05B 2203/017 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A heater assembly comprising:
a substrate having a first surface and a second surface opposing the first surface, the substrate defining at least one trench on the first surface and a pair of via holes extending from the at least one trench and through the substrate;
a functional element disposed inside the at least one trench and being flush with the first surface of the substrate; and
a pair of terminal pins disposed in the pair of via holes.