Seal ring for stern tube
Granted 24 May 2011 · 2 office actions
Assignee: WARTSILA JAPAN LTD.
Law firm: Law firm · Log in to unlock
Attorney: Attorney · Log in to unlock
Inventors: Motofumi Inaba, Hisashi Yoshida, Minoru Takayasu · Examiner: T. Chase Nelson · AU 2914 · TC 2900
Life of the patent
7 dated eventsDescription
1 parts›FIG. 1 is a perspective view of a…
FIG. 1 is a perspective view of a seal ring for a stern tube.
FIG. 2 is a right-side view of the seal ring, the left-side view being a mirror image of the right-side view, and the top and bottom view being identical thereto.
FIG. 3 is an enlarged cross-sectional view taken along line 3 — 3 of FIG. 5 .
FIG. 4 is a front view of the seal ring; and,
FIG. 5 is a rear view of the seal ring.
Claims
1 · 1 independent · depth 1Classifications
1 codesClaim changes
SoonSee which claims were amended, added or cancelled during examination, with every added and removed word marked.
The published claims of this patent are not paired with the granted ones in what we hold.
File wrapper
See the full prosecution history — every USPTO and applicant action on this file, in order.
Log in to unlockChain of title
See the full assignment history — every owner this patent has passed through, with recordation dates and reel/frame numbers.
Log in to unlockTerm & fees
See the term timeline — pendency span, in-force span, the maintenance fees paid and both computed expiry dates.
Log in to unlockValidity challenges
See the validity challenges on record — reexaminations, IPRs and PGRs, with their institution decisions and outcomes.
Log in to unlockCitations
See every patent this one cites and every patent that cites it back — publication, assignee, and how each one was found.
Log in to unlock