Method for controlling electric resistance of a compound-type resistors
US4785157A · kind A · utility
3Cited by
6References
31Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 7, 1987 |
| Grant date | Nov 15, 1988 |
| Priority date | — |
| Expiry date | Jan 7, 2007 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49155
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A method for controlling electric resistance of a compound-type resistant material is disclosed in which a laser beam is irradiated on a compound-type resistant material so as to cause a change in its chemical state whereby the specific resistance inherent to the compound-type resistant material is varied thereby to change its electric resistance in an appropriate manner. If necessary, a portion of the resistant material may be cut away by irradiation of a laser beam so as to further control the resistance value of the resistant material in an increasing sense.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.