Inventor

Charles Arthur Witschorik

Inventor

Naperville, IL, US

Overview

9→

Patents

1998–2010

Patent span

Electricity

Primary field (CPC H)

Patents· 9 as inventor

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

H04Lprimary

H04LTransmission of digital information, e.g. telegraphic communication40%

H04QSelecting25%

G06FElectric digital data processing5%

G07DHandling of coins or valuable papers, e.g. testing, sorting by denominations, counting, dispensing, changing or depositing5%

H04KSecret communication5%

H04MTelephonic communication5%

H04NPictorial communication, e.g. television5%

H04WWireless communication networks5%

Y04SSystems integrating technologies related to power network operation, communication or information technologies for improving the electrical power generation, transmission, distribution, management or usage, i.e. smart grids5%

PatentTitleYear

7,840,807'Authentication of computing device through employment of determination that current location of authentication device matches initial location'2010 7,366,198'Method and system for packet and circuit telephony in a distributed telecommunications switching system'2008 6,396,829'Communications channel synchronous micro-cell for integrating circuit and packet data transmissions'2002 6,377,690'Safe transmission of broadband data messages'2002 6,298,065'Method for multi-mode operation of a subscriber line card in a telecommunications system'2001 6,131,718'System and method for the detection of counterfeit currency'2000 6,125,117'Hybrid packet-circuit telephone network configuration'2000 6,009,100'Asynchronous transfer mode switching system'1999 5,736,932'Security for controlled access systems'1998

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1998Patents assigned to AT & T CORP (1)· patent assignee history

1998–2010Based in Naperville, IL, US· patent location history

1999–2008Patents assigned to LUCENT TECHNOLOGIES INC (7)· patent assignee history

2010Patents assigned to ALCATEL LUCENT USA INC (1)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
LUCENT TECHNOLOGIES INC	7	1999–2008
ALCATEL LUCENT USA INC	1	2010
AT & T CORP	1	1998

Locations

Location	Patents	Span
Naperville, Illinois, US	9	1998–2010