Patent · US Expired

Aquarium heater

US5057667A · kind A · utility

10Cited by
5References
1Claims
0Family size

Inventors

Key dates

Filing dateJul 26, 1989
Grant dateOct 15, 1991
Priority date
Expiry dateJul 26, 2009

Classification

  • Technology area (CPC H)Electricity
  • CPC primaryH05B3/78
  • WIPO fieldElectrical machinery, apparatus, energy
  • WIPO sectorElectrical engineering

Abstract

An aquarium heating system utilizes a conductive coating on an aquarium glass viewing window to heat the aquarium water. The conductive coating is transparent and is disposed on the surface of at least one viewing window. A voltage is supplied to the conductive coating under control of a power supply which operates to maintain the water at a constant temperature.

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