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 category ON category.patent = patent.patent AND category.type = patent.type WHERE (category.class = '174') AND (category.subclass = '141C') ORDER BY date DESC, patent, type

Total of 4 patents found where: Class is '174'; Subclass is '141C';

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
 1998
U 5,796,048 August 18, 1998 Insulator having Conductive Surface Coating to Prevent Corona Discharge
RFI coating
SUZUKI, Yoshihiro
KUTSUNA, Eiji
RFI NGK Insulators, Ltd.
 1934
U 1,983,569 December 11, 1934 Pedestal Switch Insulator
Pedestal insulator to support switch gear or bus bar
ROWLAND, Davidge H.
Pedestal Locke Insulator Corp.
 1928
U 1,661,823 March 6, 1928 Insulator
Suspension string with insulators having conducting surface to balance electrical field
HAWLEY, Kent A.
Suspension Locke Insulator Corp.
 1925
U 1,521,743 January 6, 1925 Insulator
Suspension arcing horn system and insulator (see 1,552,664 and 1,783,271)
AUSTIN, Arthur O.
Suspension The Ohio Brass Co.

Total of 0.01 seconds