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USPTO Patent Rankings Data through Dec 31, 2025
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Fedor E. Dolzhenkov — 2 Patents

Donetsk, UA: #24 of 168 inventorsTop 15%
Overall (All Time): #1,709,992 of 4,157,543Top 45%
2 Patents All Time
Fedor E. Dolzhenkov has been granted 2 US patents. The first was granted in 1983 and the most recent in December 1984. Fedor E. Dolzhenkov ranks #1,709,992 of 4,157,543 US inventors in our database (top 41.1%). Patent records list Fedor E. Dolzhenkov in Donetsk, UA.

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
4487397 Method for flame spraying of gunite on lining of metallurgical units Veniamin V. Antonov, Jury I. Bat, Edvin I. Gamalei, Semen A. Donskoi, Valentin A. Kulichenko +3 more 1984-12-11
4386737 Flame guniting lance Veniamin V. Antonov, Evgeny D. Shtepa, Alexandr P. Krivenko, Adelaida L. Kurbatova, Ivan R. Vedkalov +14 more 1983-06-07