Inventor
Malcolm E. Washburn
Inventor
Princeton, MA, US
Overview
Patents· 10 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
C04Bprimary
C04BLime, magnesia41%
F23QIgnition9%
H01CResistors9%
H05BElectric heating9%
B22DCasting of metals5%
C10JProduction of producer gas, water-gas, synthesis gas from solid carbonaceous material, or mixtures containing these gases5%
C21BManufacture of iron or steel5%
C22BProduction and refining of metals5%
C25CProcesses for the electrolytic production, recovery or refining of metals5%
F27DDetails or accessories of furnaces, kilns, ovens or retorts, in so far as they are of kinds occurring in more than one kind of furnace5%
PatentTitleYear
5,085,804'Refractory electrical device'19925,045,237'Refractory electrical device'19914,937,211'High strength nitride bonded silicon carbide refractories'19904,935,118'Self heated sensor package'19904,483,932'Refractory bodies for corrosive environments'19844,476,234'Refractory cement'19844,331,771'High density silicon oxynitride'19824,127,630'Reaction bonded silicon nitride'19784,069,058'Porous silicon oxynitride refractory shapes'19784,043,823'Lightweight silicon oxynitride'1977Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1977–1992Patents assigned to NORTON CO (10)· patent assignee history
1977–1992Based in Princeton, MA, US· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| NORTON CO | 10 | 1977–1992 |
Locations
| Location | Patents | Span |
|---|---|---|
| Princeton, Massachusetts, US | 10 | 1977–1992 |