skip navigationU S P T O SealUnited States Patent and Trademark Office TTABVUE logo
Home|Site Index|Search|Guides|Contacts|eBusiness|eBiz alerts|News|Help
TTABVUE. Trademark Trial and Appeal Board Inquiry System
v2.6.0

Summary

Query: Correspondence Name contains all words: JOHN F. SIEBERTH C/O ETHYL CORPORATION
Number of results: 2

Proceeding
Filing Date
Defendant(s),
Correspondent
Property(ies)
Plaintiff(s),
Correspondent
Property(ies)
91073633
02/24/1986
MPG INDUSTRIES, INC.
WALLENSTEIN WAGNER HATTIS STRAMPEL AND AUBEL
Mark: HY-TECH S#:73540904 R#:1430742
ETHYL PETROLEUM ADDITIVES, INC.
JOHN F. SIEBERTH C/O ETHYL CORPORATION
Mark: HITEC S#:72357813 R#:973766
91071242
03/28/1985
MALLINCKRODT, INC.
LYNDEN N. GOODWIN, ROY J. KLOSTERMANN & GRACE J. FISHEL
Mark: HYTECH S#:73414846 R#:1372077
ETHYL PETROLEUM ADDITIVES, INC.
JOHN F. SIEBERTH C/O ETHYL CORPORATION
Mark: HITEC S#:72357813 R#:973766

Results as of 02/16/2025 03:23 PMSearch again
| .HOME | INDEX| SEARCH | eBUSINESS | CONTACT US | PRIVACY POLICY