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Inventor

Stephen D. Hartline

Inventor
Millbury, MA, US

Overview

5→
Patents
1977–2012
Patent span
Chemistry
Primary field (CPC C)

Patents· 5 as inventor

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

C04Bprimary
C04BLime, magnesia50%
B82YSpecific uses or applications of nanostructures13%
C01BNon-metallic elements13%
C25CProcesses for the electrolytic production, recovery or refining of metals13%
Y10TTechnical subjects covered by former us classification13%
PatentTitleYear
8,303,889'Method for making a SiC based ceramic porous body'20124,970,057'Silicon nitride vacuum furnace process'19904,869,943'Fiber-reinforced silicon nitride ceramics'19894,435,514'Chromia magnesia refractory'19844,043,823'Lightweight silicon oxynitride'1977

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1977–1990Patents assigned to NORTON CO (4)· patent assignee history
1977–2012Based in Shrewsbury, MA, US· patent location history
1984–1990Based in Millbury, MA, US· patent location history
2012Patents assigned to BOUSSANT-ROUX YVES MARCEL LEON (1)· patent assignee history
2012Patents assigned to HARTLINE STEPHEN D (1)· patent assignee history
2012Patents assigned to MOSBY JOSTEIN (1)· patent assignee history
2012Patents assigned to POPA ANA-MARIA (1)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
NORTON CO41977–1990
BOUSSANT-ROUX YVES MARCEL LEON12012
HARTLINE STEPHEN Dself12012
MOSBY JOSTEIN12012
POPA ANA-MARIA12012
Locations
LocationPatentsSpan
Millbury, Massachusetts, US31984–1990
Shrewsbury, Massachusetts, US21977–2012