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USPTO Patent Rankings Data through Dec 31, 2025
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Robert J. Ferb — 2 Patents

REResearch-Cottrell: 2 patents #7 of 37Top 20%
Hackettstown, NJ: #348 of 793 inventorsTop 45%
New Jersey: #30,063 of 69,400 inventorsTop 45%
Overall (All Time): #1,709,992 of 4,157,543Top 45%
2 Patents All Time
Robert J. Ferb has been granted 2 US patents while listed as an inventor at Research-Cottrell. The first was granted in 1981 and the most recent in September 1982. Robert J. Ferb ranks #1,709,992 of 4,157,543 US inventors in our database (top 41.1%). Patent records list Robert J. Ferb in Hackettstown, NJ, US.

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
4351804 Sulfur dioxide scrubber with hydroclone separator Edward L. Biedell 1982-09-28 $492,000
4250152 Sulfur dioxide scrubber with hyroclone separator Edward L. Biedell 1981-02-10 $798,000