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Somerville, MA, United States of America

Mark A Troll

Average Co-Inventor Count = 2.40

ph-index = 2

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 = 237

Mark A Troll ↔ Richard T Ingwall (2 patents)Mark A Troll ↔ Duncan H Whitney (1 patent)Mark A TrollMark A Troll (2 patents)Richard T IngwallRichard T Ingwall (16 patents)Duncan H WhitneyDuncan H Whitney (1 patent)
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Inventor’s number of patents
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Strength of working relationships

Company Filing History:

1. Polaroid Corporation (2 from 2,176 patents)


2 patents:

1. 5198912 - Volume phase hologram with liquid crystal in microvoids between fringes

2. 4970129 - Holograms

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as of
12/29/2025
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