Patent · US Expired

Process for producing microcoils and microtransformers

US5852866A · kind A · utility

65Cited by

2References

15Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Klaus Kuettner · Chicago, US
Dietmar Hahn · Gerlingen, DE
Gottfried Flik · Leonberg, DE
Markus Ohnmacht · Stuttgart, DE

Key dates

Filing date	Apr 2, 1997
Grant date	Dec 29, 1998
Priority date	—
Expiry date	Apr 2, 2017

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T29/49158
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A process for producing single-layer or multi-layer microcoils or microcoil arrays that optionally have a magnetic core area to increase the coil inductance and to guide the magnetic flux. In this process, plastic films (e.g., made of polyimide or polyester), are applied using pressure and heat to serve as the insulation layers. This eliminates the need for curing the insulation and expensive leveling operations.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.