Patents by Inventor John A. Willetts

John A. Willetts has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 5021635
    Abstract: An electrically-heated deck type baker's oven where the electric heating elements, which are U-shaped in plan view, are supported by and slidable through metal chairs in rectangular metal tubes forming a series of lower and upper passages lining the top and bottom of the oven compartment.
    Type: Grant
    Filed: October 13, 1989
    Date of Patent: June 4, 1991
    Inventor: John A. Willett
  • Patent number: 5010495
    Abstract: An interactive computer assisted language learning system which allows a student to select a model phrase from text displayed on an electronic display; record (in digitized form) his own pronunciation of that phrase; and instantly listen to the digitized vocal version of the selected phrase and his own recorded pronunciation for comparison purposes. An audio CLIP mode permits the student to select any (random) portion of displayed text (e.g., a phrase, a small part of a phrase, a single word, a syllable, or a phoneme) using cursor control or the like and to control the system to play the voice corresponding to that selected portion. A SoundSort text reconstruction exercise based on aural clues automatically randomizes the order of plural phrases, provides digitized utterances of the phrases in the randomized order, and requires the student to reconstruct the original order using a visual display interface.
    Type: Grant
    Filed: February 2, 1989
    Date of Patent: April 23, 1991
    Assignee: American Language Academy
    Inventor: John A. Willetts