US Patent No: 6,473,177
Number of patents in Portfolio can not be more than 2000
Particle-size distribution measuring apparatus
Stats
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Oct 29, 2002
Issued date -
Jun 6, 2001
filing date -
09/876,505
serial no -
In Force
status
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Abstract
The present invention presents a particle-size distribution measuring apparatus which allows measuring simultaneously the dispersion state of particles in suspension medium and the particle-size distribution of the particles. The present invention is a particle-size distribution measuring apparatus which measures the particle-size distribution of particles included in a sample. The particle-size distribution measuring apparatus comprises a pH meter for measuring the pH value of the sample and an information processing portion which determines the relation between the pH value and the particle-size distribution on the basis that the pH value measured by the pH meter and the measured particle-size distribution are in the same state.
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First Claim
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International Classification(s)
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Cited Art
| Patent Info | (Count) | # Cites | Year |
|---|---|---|---|
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| 6,211,956 Automatic dilution system for high-resolution particle size analysis | 21 | 1998 | |
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| 6,354,913 Abrasive and method for polishing semiconductor substrate | 13 | 1999 | |
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| 5,015,094 Particle size measuring system | 11 | 1989 | |
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| 6,275,290 Chemical mechanical planarization (CMP) slurry quality control process and particle size distribution measuring systems | 15 | 1999 | |
Patent Citation Ranking
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Apr 29, 2014 |
| Fee | Large entity fee | small entity fee | micro entity fee |
|---|---|---|---|
| Surcharge - 11.5 year - Late payment within 6 months | $160.00 | $80.00 | $40.00 |
| 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 |