Growing community of inventors

Maple Grove, MN, United States of America

David C Longren

Average Co-Inventor Count = 2.77

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 = 42

David C LongrenRobert L Kramer (2 patents)David C LongrenLawrence Peter Head (1 patent)David C LongrenMohammed Shahid (1 patent)David C LongrenJ Bruce Warren (1 patent)David C LongrenJerry J Rubatt (1 patent)David C LongrenDavid C Longren (3 patents)Robert L KramerRobert L Kramer (6 patents)Lawrence Peter HeadLawrence Peter Head (32 patents)Mohammed ShahidMohammed Shahid (3 patents)J Bruce WarrenJ Bruce Warren (2 patents)Jerry J RubattJerry J Rubatt (1 patent)
..
Inventor’s number of patents
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Strength of working relationships

Company Filing History:

1. Federal Cartridge Company (2 from 43 patents)

2. Federal-hoffman, Inc. D/b/a Federal Cartridge Co. (1 from 1 patent)


3 patents:

1. 6202561 - Shotshell having pellets of different densities in stratified layers

2. 5859090 - Injection-modulable, polycaprolactone-based, biodegradable plastic

3. 5175389 - Frontally guided sabot bullet

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idiyas.com
as of
12/12/2025
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