Growing community of inventors

Tucson, AZ, United States of America

Marvin B Stark

Average Co-Inventor Count = 1.83

ph-index = 8

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 = 198

Marvin B StarkSteve L Suvada (2 patents)Marvin B StarkFranklin P Adler (1 patent)Marvin B StarkWilliam R Halliar (1 patent)Marvin B StarkHerman A Aquino (1 patent)Marvin B StarkRobert A Spychalski (1 patent)Marvin B StarkClement J Kniola (1 patent)Marvin B StarkLyn D Collier (1 patent)Marvin B StarkWayne D Harbin (1 patent)Marvin B StarkKenneth W Britt (1 patent)Marvin B StarkGeorge A Tedesco (1 patent)Marvin B StarkRonald G Schultz (1 patent)Marvin B StarkMarvin B Stark (11 patents)Steve L SuvadaSteve L Suvada (2 patents)Franklin P AdlerFranklin P Adler (21 patents)William R HalliarWilliam R Halliar (15 patents)Herman A AquinoHerman A Aquino (4 patents)Robert A SpychalskiRobert A Spychalski (2 patents)Clement J KniolaClement J Kniola (1 patent)Lyn D CollierLyn D Collier (1 patent)Wayne D HarbinWayne D Harbin (1 patent)Kenneth W BrittKenneth W Britt (1 patent)George A TedescoGeorge A Tedesco (1 patent)Ronald G SchultzRonald G Schultz (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Pullman Incorporated (7 from 228 patents)

2. Other (3 from 832,812 patents)

3. Richmond Tank Car Company (1 from 3 patents)


11 patents:

1. 6241415 - Adjustable and reusable handle for containers

2. 4411371 - Hatch cover locking mechanism

3. 4407203 - Railroad tank car lift lug

4. 4362111 - Covered hopper car

5. 4252067 - Side wall for railway hopper car

6. 4250814 - Dual hopper car doors

7. 4245565 - Cambered hatch cover seal arrangement

8. 4224877 - Railway hopper car closure actuating mechanism

9. 4130068 - Center filler for railway cars

10. 4057020 - Cam operated hatch cover holddown

11. 4046082 - Trough hatch locking device

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idiyas.com
as of
12/21/2025
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