Determination of soil stiffness levels
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
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Jan 27, 2009
Grant Date -
Nov 29, 2007
app pub date -
Sep 20, 2004
filing date -
Sep 19, 2003
priority date (Note) -
In Force
status (Latency Note)
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Abstract
According to the invention, a single device permits the relative soil rigidity values of a section of soil to be determined in a rapid measuring method and in addition, absolute soil rigidity values to be determined in a slightly slower method. If the device is calibrated with the aid of the measured absolute values, a rapid absolute measurement can also take place. The device can also be used for soil compaction.
First Claim
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Family

- 15 United States
- 10 France
- 8 Japan
- 7 China
- 5 Korea
- 2 Other
Patent Owner(s)
Patent Owner | Address | |
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AMMANN SCHWEIZ AG | 4900 LANGENTHAL |
International Classification(s)

- 2004 Application Filing Year
- E01C Class
- 163 Applications Filed
- 72 Patents Issued To-Date
- 44.18 % Issued To-Date
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
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Anderegg, Roland | Olten, CH | 6 | 177 |
# of filed Patents : 6 Total Citations : 177 | |||
Von, Felten Dominik | Aarau, CH | 1 | 64 |
# of filed Patents : 1 Total Citations : 64 |
Cited Art Landscape
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Patent Citation Ranking
- 55 Citation Count
- E01C Class
- 99.01 % this patent is cited more than
- 16 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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Jun 10, 2019 | MAFP | MAINTENANCE FEE PAYMENT | free format text: PAYMENT OF MAINTENANCE FEE, 12TH YR, SMALL ENTITY (ORIGINAL EVENT CODE: M2553); ENTITY STATUS OF PATENT OWNER: SMALL ENTITY year of fee payment: 12 |
Jun 11, 2015 | FPAY | FEE PAYMENT | year of fee payment: 8 |
Jun 13, 2011 | FPAY | FEE PAYMENT | year of fee payment: 4 |
Dec 11, 2007 | I | Issuance | |
Nov 21, 2007 | STCF | INFORMATION ON STATUS: PATENT GRANT | free format text: PATENTED CASE |
Aug 09, 2007 | P | Published | |
Feb 09, 2006 | F | Filing | |
Feb 09, 2006 | AS | ASSIGNMENT | free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:SHAN, XINXIN;REEL/FRAME:017556/0775 Owner name: LED SMART INC., CANADA Effective Date: Feb 09, 2006 |

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