Search the Insulator Patent Reference Library:

Build your search criteria. The patent must match all the values specified.
Select patent types: Utility   Design   Reissue
Patent number:
Date:
Year between: and
Patentee starting with:
City:
State:
Assigned To starting with:
Description containing:
Category:
Class:    Subclass:
Click Search when complete:
SELECT DISTINCT patent.*, YEAR(date) as year FROM patent LEFT JOIN name ON name.patent = patent.patent AND name.type = patent.type WHERE (last_name = 'DEWEY') AND (first_name = 'Benjamin F.') ORDER BY date ASC, patent, type

Total of 4 patents found where: Last Name is 'DEWEY'; First Name is 'Benjamin F.';

View a patent by clicking on the patent number. You can sort by any of the columns by clicking on the column name.

T / S Patent Date Description Patentee Category Assigned To
 1943
U 2,327,972 August 24, 1943 High Strength Ceramic Surface
Manufacturing method of using porcelain ""sand"" with a lower coefficient of expansion than the insulator body to rough up the surface and provide a strong cement joint without reducing the effectiveness of the compression glaze (see 2,337,691)
STETTINIUS, Kenneth E.
DEWEY, Benjamin F.
Manufacturing Lapp Insulator Co., Inc.
U 2,337,691 December 28, 1943 Method of Making High Strength Ceramic Surfaces
Method of manufacturing insulators using porcelain ""sand"" with a lower coefficient of expansion than the insulator body to rough up the surface and provide a strong cement joint without reducing the effectiveness of the compression glaze (see 2,327,972)
STETTINIUS, Kenneth E.
DEWEY, Benjamin F.
Manufacturing Lapp Insulator Co., Inc.
 1949
U 2,481,729 September 13, 1949 Porcelain Insulator Body
Porcelain clay body with an increased firing range
DEWEY, Benjamin F.
Porcelain Lapp Insulator Co., Inc.
 1971
U 3,582,538 June 1, 1971 Prestressed Insulator
Prestressing post type insulators by making porcelain in compression in order to increase cantilever load
KILLIAN, Stanley C.
DEWEY, Benjamin F.
Post Type Interpace Corp.

Total of 0.00 seconds