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| Art Unit: | 1779 — Liquid purification or separation |
|---|---|
| Group: | 1770 — Chemical Apparatus, Separation and Purification, Liquid and Gas Contact Apparatus |
| Classes: |
210 — Liquid purification or separation 204 — Chemistry: electrical and wave energy 203 — Distillation: processes, separatory 435 — Chemistry: molecular biology and microbiology 137 — Fluid handling 424 — Drug, bio-affecting and body treating compositions 134 — Cleaning and liquid contact with solids 252 — Compositions 452 — Butchering 604 — Surgery |
| Phone: | (571) 270-1065 |
| Email: | hayden.brewster@uspto.gov |
| Location: | VA 22314 |
| Title: | Pat Examnr Cheml Engrg |
| Service: | 14 years |
| Grade: | GS-14 |
| 3-Year Grant rate: | 64% over 210 cases |
|---|---|
| Difficulty: | Harder |
| Difficulty Percentile: | 68th
|
With Examiner Brewster, you have a 64% chance of getting an issued patent by 3 years after the first office action. Examiner Brewster is a harder examiner and in the 68th percentile across all examiners (with 100th percentile most difficult).
Below is the grant rate timeline for Examiner Brewster, where the timeline is relative to the date of the first office action. The three-year grant rate is the percentage of applications granted at three years after the first office action.
Examiner Brewster's grant rate is lower than that of Art Unit 1779 and lower than that of the USPTO.
| Average Office Actions Per Grant | |
|---|---|
| Examiner Brewster | 1.9 |
| Art Unit 1779 | 1.8 |
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Disclaimer: We do not provide any guarantees as to the accuracy of the statistics presented above and under
no circumstances will we be liable for any outcome resulting from your reliance on the above statistics.