Examiner Charles D. Hammond
Examiner Charles D. Hammond appears to be about average relative to their peer examiners. Their lifetime grant ratio is 55.6%, they average 2.12 office actions per granted patent, and their rejection profile is dominated by ยง103.
Difficulty vs AU
About Average
Difficulty vs Group
About Average
Difficulty vs TC
Very Easy
Difficulty vs USPTO
About Average
Average OA / Grant
2.12
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Examiner Details
- Observed Examiner Years
- 5 years (2009-2013)
- Tech Center
- 1700 - Chemical and Materials Engineering
- Group
- 1770 - Chemical Apparatus, Separation and Purification
Metrics
- Applications Evaluated
- 151
- Granted Applications
- 84
- Non-Granted Applications
- 67
- Avg OA / Grant
- 2.12
- Last OA Observed
- May 2013 (155 months ago)
Context Comparison
| Scope | Examiners | Lifetime Grant Ratio | Avg OA / Grant |
|---|---|---|---|
| This Examiner | 1 | 55.6% | 2.12 |
| Art Unit | 25 | 49.9% | 2.02 |
| Group | 173 | 53.1% | 1.94 |
| Tech Center | 1,713 | 47.3% | 2.14 |
| USPTO | 16,116 | 54.8% | 1.98 |
Grant Timeline
Shaded region marks the last two observed years, where grant outcomes may lag due to recency.
| Year | Applications | Granted | Grant Rate |
|---|---|---|---|
| No observed data before 2009; examiner may not yet have been active in the available dataset. | |||
| 2009 | 7 | 3 | 42.9% |
| 2010 | 43 | 21 | 48.8% |
| 2011 | 49 | 24 | 49.0% |
| 2012 | 45 | 30 | 66.7% |
| 2013 | 7 | 6 | 85.7% |
| No observed data after 2013; examiner may have gone inactive or moved out of examining work. | |||
84 family-cache-validated grants; 0 OA-only grant signals.
Rejection Timeline
| OA # | Office Actions | § 101 Percentage | § 102 Percentage | § 103 Percentage | § 112 Percentage |
|---|---|---|---|---|---|
| 1 | 151 | 0.0% | 8.6% | 86.8% | 2.6% |
| 2 | 89 | 0.0% | 5.6% | 89.9% | 4.5% |
| 3 | 29 | 0.0% | 3.4% | 86.2% | 6.9% |
| 4 | 15 | 0.0% | 0.0% | 93.3% | 6.7% |
| 5 | 8 | 0.0% | 0.0% | 87.5% | 12.5% |
| 6 | 5 | 0.0% | 0.0% | 100.0% | 0.0% |
| 7 | 4 | 0.0% | 0.0% | 100.0% | 0.0% |
| 8 | 1 | 0.0% | 0.0% | 100.0% | 0.0% |