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Inventor

Daniel C. Sheirer

Inventor
Bedford, PA, US

Overview

10→
Patents
1991–2001
Patent span
Fixed constructions
Primary field (CPC E)

Patents· 10 as inventor

Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.

E21Bprimary
E21BEarth or rock drilling56%
B21KMaking forged or pressed metal products, e.g. horse-shoes, rivets, bolts or wheels13%
E21CMining or quarrying13%
Y10TTechnical subjects covered by former us classification13%
F16LPipes6%
PatentTitleYear
6,247,759'Cutting tool assembly with replaceable spray nozzle'20015,927,411'Connector with variable resistance retention member'19995,467,837'Rotary drill bit having an insert with leading and trailing relief portions'19955,452,628'Cold headed center vacuum drill bit'19955,429,199'Cutting bit and cutting insert'19955,400,861'Rotatable cutting bit assembly'19955,297,643'Cold headed center vacuum drill bit'19945,184,689'Radial cut drill bit insert'19935,172,775'Rotary drill bit insert'19924,981,328'Rotatable tool having a carbide insert with bumps'1991

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1991–1999Patents assigned to KENNAMETAL INC (9)· patent assignee history
1991–2001Based in Bedford, PA, US· patent location history
1994Patents assigned to NSS IND (1)· patent assignee history
2001Patents assigned to KENNAMETAL PC INC (1)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
KENNAMETAL INC91991–1999
KENNAMETAL PC INC12001
NSS IND11994
Locations
LocationPatentsSpan
Bedford, Pennsylvania, US101991–2001