Concentric tubular centrifuge
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Aug 31, 1999
Grant Date -
N/A
app pub date -
Oct 14, 1997
filing date -
Oct 15, 1996
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A centrifuge for decanting lighter material from heavier material from a mixture of initial material includes a housing having a central body and a hollow arm extending from the body, the arm having a first end attached to the central body, and a second end extending away from the central body, and an end cap attached to the second end of the arm to form a chamber in the arm. A baffle is attached to the body and extends into the chamber, the baffle having a longer inner tube having an interior and a distal end, and a shorter outer tube. The longer tube is positioned inside the shorter tube and defines an inner space therebetween. An outer space is defined between the shorter tube and the hollow arm. An entrance path for the mixture of initial material is formed in the housing and communicates with the inner space. An exit path for the light material is formed in the housing and communicates with the outer space. An exit path for the heavier material is formed in the housing and includes the interior of the longer tube. A plug is formed in the chamber adjacent the end cap to engage the distal end of the longer tube and define a flow path to guide the lighter material to the light material exit path.
First Claim
all claims..Other Claims data not available
Family

- 15 United States
- 10 France
- 8 Japan
- 7 China
- 5 Korea
- 2 Other
Patent Owner(s)
Patent Owner | Address | |
---|---|---|
ERTH TECHNOLOGIES INC | 7102 LAVISTA PLACE SUITE 200 LONGMONT CO 80503 |
International Classification(s)

- 1997 Application Filing Year
- B04B Class
- 90 Applications Filed
- 57 Patents Issued To-Date
- 63.34 % Issued To-Date
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
---|---|---|---|
Cornay, Paul J | 1506 Frontier St., Longmont, CO 80501 | 25 | 249 |
# of filed Patents : 25 Total Citations : 249 |
Cited Art Landscape
- No Cited Art to Display

Patent Citation Ranking
- 3 Citation Count
- B04B Class
- 5.41 % this patent is cited more than
- 26 Age
Forward Cite Landscape
- No Forward Cites to Display

Maintenance Fees
Fee | Large entity fee | small entity fee | micro entity fee | due date |
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Fee | Large entity fee | small entity fee | micro entity fee |
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Surcharge after expiration - Late payment is unavoidable | $700.00 | $350.00 | $175.00 |
Surcharge after expiration - Late payment is unintentional | $1,640.00 | $820.00 | $410.00 |
Full Text

Legal Events
Date | Code | Event | Description |
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Aug 03, 2011 | FPAY | FEE PAYMENT | year of fee payment: 12 |
Aug 03, 2011 | SULP | SURCHARGE FOR LATE PAYMENT | year of fee payment: 11 |
Apr 04, 2011 | REMI | MAINTENANCE FEE REMINDER MAILED | |
Dec 03, 2007 | FEPP | FEE PAYMENT PROCEDURE | free format text: PAYOR NUMBER ASSIGNED (ORIGINAL EVENT CODE: ASPN); ENTITY STATUS OF PATENT OWNER: SMALL ENTITY |
Feb 28, 2007 | FPAY | FEE PAYMENT | year of fee payment: 8 |
Oct 17, 2006 | B1 | REEXAMINATION CERTIFICATE FIRST REEXAMINATION | free format text: THE PATENTABILITY OF CLAIMS 1-13 IS CONFIRMED. |
May 04, 2004 | RR | REQUEST FOR REEXAMINATION FILED | Effective Date: May 04, 2004 |
Jun 26, 2003 | AS | ASSIGNMENT | free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:ERTH INC.;REEL/FRAME:014591/0756 Owner name: ERTH TECHNOLOGIES, INC., COLORADO Effective Date: Jun 26, 2003 |
Feb 06, 2003 | FPAY | FEE PAYMENT | year of fee payment: 4 |
Nov 02, 2001 | AS | ASSIGNMENT | free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:CORNAY, PAUL J.;REEL/FRAME:012376/0721 Owner name: ERTH LLC, COLORADO Effective Date: Nov 02, 2001 |
Mar 21, 2000 | AS | ASSIGNMENT | free format text: STANDARD AGREE - FOR PROFESSIONAL SERVICES WITH ASSIGNMENT PROVISION AND AMENDMENT.;ASSIGNOR:CH2M HILL, INC.;REEL/FRAME:013323/0113 Owner name: ADROP, LLC, COLORADO Effective Date: Feb 26, 1997 free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:ERTH, LLC;REEL/FRAME:013315/0129 Owner name: ERTH INC., COLORADO Effective Date: Oct 01, 2002 free format text: CHANGE OF NAME OF CONTRACTING PARTY;ASSIGNOR:CH2M HILL, INC.;REEL/FRAME:013315/0126 Owner name: ERTH, LLC, COLORADO Effective Date: Mar 21, 2000 |
Aug 31, 1999 | I | Issuance | |
Aug 20, 1999 | STCF | INFORMATION ON STATUS: PATENT GRANT | free format text: PATENTED CASE |
Oct 14, 1997 | F | Filing | |
Oct 15, 1996 | PD | Priority Date |

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