Resources Contact Us Home
Revolving Door Control, Inc. Patents
Revolving Door Control, Inc.
Claremont, CA
No. of patents:

Patent Number Title Of Patent Date Issued
5012455 Security door with improved sensor for detecting unauthorized passage April 30, 1991
A control system for a revolving door includes an ultrasonic sensor having multiple sensor heads. The door has a housing, and multiple moveable compartments formed by door wings attached to and radially extending from a rotatable axis. The sensors emit energy waves into the housing in

  Recently Added Patents
Improving alignment target contrast in a lithographic double patterning process
Cryptographically generated addresses using backward key chain for secure route optimization in mobile internet protocol
Metal-doped oxide, method of preparing the same, and solid oxide electrolyte using the metal-doped oxide
Method and device for authenticating transmitted user data
Method, device and computer readable medium for determining whether transmission signals are present in received signals
Novelty snacks and method of manufacture of same
Device and implantation system for electrical stimulation of biological systems
  Randomly Featured Patents
Parallel calculation of exponent and sticky bit during normalization
2,2'-MDI-based isocyanate mixtures, polyisocyanate polyaddition products prepared therefrom, processes for making the same and methods for their use
Apparatus for forming gussets in a tubular plastic film
Light fixture and lens assembly for same
Vertical-axis wind turbine
Magnetic indicator assembly
Multi-view object detection using appearance model transfer from similar scenes
Clutch with damper disc assembly
Electrical instrument housing
Apparatus, sample cuvette and method for optical measurements