Joel P Wittenauer

US Patent:

7769306, Aug 3, 2010

Filed:

Dec 30, 2005

Appl. No.:

11/323733

Inventors:

Douglas Anthony Able - Shelbyville KY, US
William Keith Richardson - Salvisa KY, US
Joel Patrick Wittenauer - Shelbyville KY, US

Assignee:

Lexmark International, Inc. - Lexington KY

International Classification:

G03G 15/00

US Classification:

399 12

Abstract:

Data may be obtained in the form of a printer control density table from a memory within a replacement toner cartridge. The cartridge may include parity bits to ensure the accuracy of the data.

US Patent:

20080298823, Dec 4, 2008

Filed:

May 30, 2007

Appl. No.:

11/807898

Inventors:

Joel P. Wittenauer - Shelbyville KY, US
William K. Richardson - Salvisa KY, US

International Classification:

G03G 15/08

US Classification:

399 27

Abstract:

A method for determining the number of printed pages remaining in a toner cartridge for an electrophotographic image forming device. A toner cartridge and electrophotographic image forming device for storing and/or performing aspects of the method is also provided.

US Patent:

20220293152, Sep 15, 2022

Filed:

Aug 14, 2020

Appl. No.:

17/636982

Inventors:

- San Jose CA, US
Mark Evan MARSON - Carlsbad CA, US
Joel WITTENAUER - Pleasanton CA, US

International Classification:

G11C 8/16
G11C 8/12
G06F 7/58

Abstract:

A random number generator selects addresses while a ‘scoreboard’ bank of registers (or bits) tracks which addresses have already been output (e.g., for storing or retrieval of a portion of the data.) When the scoreboard detects an address has already been output, a second address which has not been used yet is output rather than the randomly selected one. The second address may be selected from nearby addresses that have not already been output.

US Patent:

20200272725, Aug 27, 2020

Filed:

Feb 28, 2020

Appl. No.:

16/804563

Inventors:

- Sunnyvale CA, US
Matthew Evan Orzen - San Francisco CA, US
Joel Patrick Wittenauer - Pleasanton CA, US
Steven C. Woo - Saratoga CA, US

International Classification:

G06F 21/44
H04L 29/06
H04L 9/32

Abstract:

Pairing data associated with a second device may be received at a first device. The pairing data may be received from a server. A first authentication proof may be generated based on the pairing data received from the server. A second authentication proof may be received from the second device. Furthermore, an authentication status of the second device may be updated based on a comparison of the first authentication proof that is based on the pairing data received from the server and the second authentication proof that is received from the second device.

US Patent:

20200145409, May 7, 2020

Filed:

Jun 14, 2018

Appl. No.:

16/619906

Inventors:

- Sunyvale CA, US
Michael A. HAMBURG - San Francisco CA, US
Pankaj ROHATGI - Los Altos CA, US
Amit KAPOOR - San Francisco CA, US
Joel Patrick WITTENAUER - Pleasanton CA, US

International Classification:

H04L 29/06
H04W 12/06
H04W 12/00

Abstract:

The embodiments described herein describe technologies to address initial establishment of device credentials in an Internet of Things (IoT) infrastructure. The embodiments are directed to unifying secure credential establishment regardless of the endpoint type, thus addressing the challenge of a great diversity among IoT devices. This approach is designed to address a challenge of initial trusted enrollment of the IoT endpoints into a secure infrastructure, which allows secure communications between the devices in the IoT environment.

US Patent:

20190087567, Mar 21, 2019

Filed:

Jun 21, 2018

Appl. No.:

16/015107

Inventors:

- Sunnyvale CA, US
Matthew Evan Orzen - San Francisco CA, US
Joel Patrick Wittenauer - Pleasanton CA, US
Steven C. Woo - Saratoga CA, US

International Classification:

G06F 21/44
H04L 29/06
H04L 9/32

Abstract:

Pairing data associated with a second device may be received at a first device. The pairing data may be received from a server. A first authentication proof may be generated based on the pairing data received from the server. A second authentication proof may be received from the second device. Furthermore, an authentication status of the second device may be updated based on a comparison of the first authentication proof that is based on the pairing data received from the server and the second authentication proof that is received from the second device.

US Patent:

20150278506, Oct 1, 2015

Filed:

Mar 26, 2015

Appl. No.:

14/670379

Inventors:

- San Francisco CA, US
Matthew Evan Orzen - San Francisco CA, US
Joel Patrick Wittenauer - Pleasanton CA, US
Steven C. Woo - Saratoga CA, US

International Classification:

G06F 21/44
H04L 9/32
H04L 29/06

Abstract:

Pairing data associated with a second device may be received at a first device. The pairing data may be received from a server. A first authentication proof may be generated based on the pairing data received from the server. A second authentication proof may be received from the second device. Furthermore, an authentication status of the second device may be updated based on a comparison of the first authentication proof that is based on the pairing data received from the server and the second authentication proof that is received from the second device.