Growing community of inventors

New Castle, PA, United States of America

Thomas P Rapchak

Average Co-Inventor Count = 2.00

ph-index = 5

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 = 161

Thomas P RapchakMichael Marino (5 patents)Thomas P RapchakThomas P Rapchak (5 patents)Michael MarinoMichael Marino (15 patents)
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Inventor’s number of patents
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Strength of working relationships

Company Filing History:

1. West Penn Plastics, Inc. (5 from 8 patents)


5 patents:

1. 5667094 - Container and closure assembly

2. 5662247 - Tamper evident push pull resealable cap

3. 5657906 - Tamper evident push pull resealable cap

4. 5507416 - Tamper evident push pull resealable cap

5. 5460281 - Safety lock screw cap and container

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as of
1/15/2026
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