Stephen Brown Allen

US Patent:

6345353, Feb 5, 2002

Filed:

Jan 30, 2001

Appl. No.:

09/772653

Inventors:

Stephen Allen - Chandler AZ
Igor Wojewoda - Phoenix AZ

Assignee:

Microchip Technology Incorporated - Chandler AZ

International Classification:

G06F 932

US Classification:

712202, 711219, 712245

Abstract:

The stack pointer is used for generating the next unutilized location in the stack memory device in order to indicate where a current value in the program counter is to be written. The stack pointer also generates a directly preceding location to the next unutilized location in order to read the last value of the program counter that was written to the stack memory device. The stack pointer will select the next unutilized location in the stack memory device for a write operation and the directly preceding location to the next unutilized location in the stack memory device for a read operation. The stack pointer will further perform either a post increment or post decrement operation on the next unutilized location in the stack memory device after execution of a current instruction.

US Patent:

7484938, Feb 3, 2009

Filed:

May 3, 2005

Appl. No.:

11/121400

Inventors:

Stephen D Allen - Chandler AZ, US

International Classification:

F04B 43/12
F04B 49/06
F04B 49/00

US Classification:

417 53, 417 12

Abstract:

An electronic pool pump timer that controls the run time or the pump for a period of time each day depending on the date. In the preferred embodiment, the user enters the historical daily maximum and minimum pump run times for the specific pool and the system calculates the required time the pump will run on a given day. The customized run time is thus calculated as a function of the date and the minimum and maximum run times for a given pool. The system then self-adjusts the run time each day as necessary. The device comprises a data input means, a display, memory, and a controller. It may also include a manual override to allow the user to turn the pump on at any time. The device is connected to the pump motor. The device is connected to a power supply and may also include a battery back-up in the event of a power outage. To prevent the pool from freezing.

US Patent:

20020032847, Mar 14, 2002

Filed:

Mar 19, 2001

Appl. No.:

09/812039

Inventors:

Stephen Allen - Chandler AZ, US
Igor Wojewoda - Phoenix AZ, US

International Classification:

G06F012/00

US Classification:

711/219000, 711/154000

Abstract:

The stack pointer is used for generating the next unutilized location in the stack memory device in order to indicate where a current value in the program counter is to be written. The stack pointer also generates a directly preceding location to the next unutilized location in order to read the last value of the program counter that was written to the stack memory device. The stack pointer will select the next unutilized location in the stack memory device for a write operation and the directly preceding location to the next unutilized location in the stack memory device for a read operation. The stack pointer will further perform either a post increment or post decrement operation on the next unutilized location in the stack memory device after execution of a current instruction.

US Patent:

20030076305, Apr 24, 2003

Filed:

Oct 22, 2001

Appl. No.:

10/062804

Inventors:

Stephen Allen - Chandler AZ, US

International Classification:

G09G005/00

US Classification:

345/168000

Abstract:

A keystroke recording device contains an integral time and date function. The current time and date are associated with recorded activity. It is advantageous for the time and date to be associated with recorded activity so that more information about the recorded events can be presented.

US Patent:

20030235665, Dec 25, 2003

Filed:

Jun 20, 2002

Appl. No.:

10/175773

Inventors:

Stephen Allen - Chandler AZ, US

International Classification:

B65D001/00

US Classification:

428/035700

Abstract:

Wrapping material incorporating removable items such as bite-sized candies, small toys, or prizes. The small items are incorporated between sheets of flexible material such as paper or plastic. The items can be positioned in the wrap to form geometric patterns or artistic designs. The wrap can also be used to make bags, boxes and envelopes.

US Patent:

59268654, Jul 27, 1999

Filed:

Sep 23, 1997

Appl. No.:

8/935559

Inventors:

Joseph L. Witinski - Mesa AZ
Stephen D. Allen - Chandler AZ

International Classification:

E04H 400

US Classification:

4496

Abstract:

A cover for the dispensing head of a turbo jet swimming pool cleaning device comprising a plurality of integral radially extending fingers uniformly spaced about the periphery of a circular top, the fingers serving as extensions of vanes incorporated in said dispensing head and also as ramps enabling other swimming pool cleaning equipment to pass without difficulty over the dispensing head.

US Patent:

59048530, May 18, 1999

Filed:

Oct 24, 1997

Appl. No.:

8/957049

Inventors:

Stephen D. Allen - Holladay UT
Leonard Rees Lyman - South Jordan UT

Assignee:

Microbar Incorporated - Sunnyvale CA

International Classification:

C02F1/44;1/56

US Classification:

210638

Abstract:

A process and system for removing heavy metals, fluoride, silica and other contaminants from large volumes of wastewater is disclosed. In the process, a wastewater stream containing the contaminant is treated with a chemical coagulant to create a particle having a diameter greater than 5 microns. Treated wastewater is passed through a microfiltration membrane which physically separates the metal contaminant particle from the wastewater. Commercially available microfiltration membranes having a pore size from 0. 5 micron to 5 microns may be used. The treated wastewater flow rate through the microfiltration membranes can range from 700 gallons per square foot of membrane per day ("GFD") to 1500 GFD. Solids are removed from the membrane surface by periodically backflushing the microfiltration membranes and draining the filtration vessel within which the membranes are located. The dislodged solid material within the filtration vessel is flushed into a holding tank for further processing of the solids.

US Patent:

59102519, Jun 8, 1999

Filed:

Oct 24, 1997

Appl. No.:

8/957053

Inventors:

Stephen D. Allen - Holladay UT
Leonard Rees Lyman - South Jordan UT

Assignee:

Microbar Incorporated - Sunnyvale CA

International Classification:

C02F 144
C02F 156

US Classification:

210638

Abstract:

A process and system for removing heavy metals, fluoride, silica and other contaminants from large volumes of wastewater is disclosed. In the process, a wastewater stream containing the contaminant is treated with a chemical coagulant to create a particle having a diameter greater than 5 microns. Treated wastewater is passed through a microfiltration membrane which physically separates the metal contaminant particle from the wastewater. Commercially available microfiltration membranes having a pore size from 0. 5 micron to 5 microns may be used. The treated wastewater flow rate through the microfiltration membranes can range from 700 gallons per square foot of membrane per day ("GFD") to 1500 GFD. Solids are removed from the membrane surface by periodically backflushing the microfiltration membranes and draining the filtration vessel within which the membranes are located. The dislodged solid material within the filtration vessel is flushed into a holding tank for further processing of the solids.