Growing community of inventors

Altoona, IA, United States of America

Alan H Woodruff

Average Co-Inventor Count = 1.60

ph-index = 3

The patent ph-index is calculated by counting the number of publications for which an author has been cited by other authors at least that same number of times.

Forward Citations = 83

Alan H WoodruffRobert C Tweedt (2 patents)Alan H WoodruffJohn S Holloway (1 patent)Alan H WoodruffAlan H Woodruff (4 patents)Robert C TweedtRobert C Tweedt (4 patents)John S HollowayJohn S Holloway (2 patents)
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Inventor’s number of patents
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Strength of working relationships

Company Filing History:

1. Emco Specialties, Inc. (2 from 6 patents)

2. Emco Enterprises, Inc. (1 from 22 patents)

3. Emco Enterprises, Inc., D/b/a Emco Specialties, Inc. (1 from 1 patent)


4 patents:

1. 5230376 - Door with transom window

2. 5216839 - Reversible hinge door assembly

3. 5214880 - Door edge construction

4. 5039246 - Method and means for securing screen to a frame

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as of
12/10/2025
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