Resources Contact Us Home
Photolithographic process for producing etched patterns on the surface of fine tubes, wires or other three dimensional structures

Image Number 8 for United States Patent #6391502.

The present invention involves a photolithographic process, and apparatus and material for use therein, for producing etched or eroded areas or holes in a selected pattern on or in the surface of fine workpieces, such as small diameter tubes. One aspect of the present invention is a photolithographic process for producing a selected pattern on a nonplanar surface of a workpiece using at least one mask to define the selected pattern. The process includes the acts of applying a photoresist material to the workpiece and aligning the mask with the nonplanar surface of the workpiece. The mask may have an inner surface that corresponds to the nonplanar surface. The process may also include the acts of exposing and developing the photoresist material.

  Recently Added Patents
Motor assembly
Battery loading and unloading mechanism
Vehicle control apparatus
Computer system for routing package deliveries
Control device with adjusting pulse width modulation function and the backlight module thereof
Piezoelectric quasi-resonance linear motors based on acoustic standing waves with combined resonator
Automatic portable electronic device configuration
  Randomly Featured Patents
Food pouch with integral collar
Method and apparatus for cleaning colorant applicators
Semiconductor processing methods of forming integrated circuitry memory devices, methods of forming capacitor containers, methods of making electrical connection to circuit nodes and related i
Concentration measuring instrument, concentration measuring contact apparatus, concentration measuring calculating apparatus, and concentration measuring method
Polyurethanes based on urethane polyols and short and long chain polyols
Hydrokinetic torque converter
Headboard and footboard set
Twisting actuator accelerometer
Panelling edging
Large substituent, non-phenolic opioids and methods of use thereof