Growing community of inventors

Belvidere, IL, United States of America

Walter P Pietruch

Average Co-Inventor Count = 2.75

ph-index = 7

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 = 270

Walter P PietruchRichard L Peterson (7 patents)Walter P PietruchEwald A Oppmann (4 patents)Walter P PietruchChet Wright (3 patents)Walter P PietruchDonald Leni (3 patents)Walter P PietruchGordon E VerWeyst (2 patents)Walter P PietruchGlenn S Ceckowski (2 patents)Walter P PietruchRichard E Guzzardo (1 patent)Walter P PietruchWalter P Pietruch (11 patents)Richard L PetersonRichard L Peterson (9 patents)Ewald A OppmannEwald A Oppmann (4 patents)Chet WrightChet Wright (3 patents)Donald LeniDonald Leni (3 patents)Gordon E VerWeystGordon E VerWeyst (15 patents)Glenn S CeckowskiGlenn S Ceckowski (2 patents)Richard E GuzzardoRichard E Guzzardo (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. J.l. Clark, Inc. (10 from 89 patents)

2. Other (1 from 832,912 patents)


11 patents:

1. 6648631 - Deep drawn candle can with formed safety bottom

2. 6543268 - Deep drawn candle can with formed safety bottom

3. 6523239 - Die for assembling metal spool having high torque transmitting capacity between spool components

4. 6419184 - Wooden spool held together with novel tie rod assembly and method of assembling the same between a pair of dies

5. 6398544 - Formed safety bottom for a candle can

6. 6289570 - Die and method for assembling metal spool having high torque transmitting capacity between spool components

7. 6267324 - Metal spool having high torque transmitting capacity between spool components

8. 6155451 - Sealed metal container

9. 6036042 - Sealed metal container

10. 5829583 - Container for packaging recorded media

11. D385145 - Bottom of a disc container for CD and floppy discs

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1/7/2026
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