Art Unit 1657
Group 1650Enzymology, Microbiology, and Fermentation
- Active examiners
- 23
- Average office actions per grant
- 2.06
Grant ratio
- Art Unit 1657
- 53.9%
- Group 1650
- 54.1%
Active examiners
| Satyendra K. Singh | 54.2% | 2.06 | August 2026 |
|---|---|---|---|
| Robert J Yamasaki | 59.1% | 2.37 | August 2026 |
| Charles Z Constantine | 53.7% | 2.07 | August 2026 |
| Blaine Lankford | 66.1% | 2.26 | August 2026 |
| Thane Underdahl | 49.3% | 1.82 | August 2026 |
| Laura J Schuberg | 22.5% | 3.75 | August 2026 |
| Kara D Johnson | 66.5% | 2.41 | August 2026 |
| Teresa E Knight | 54.0% | 2.45 | August 2026 |
| Aaron J. Kosar | 65.4% | 1.94 | August 2026 |
| Candice Lee Swift | 31.5% | 2.33 | August 2026 |
| Vera Afremova | 43.4% | 2.38 | August 2026 |
| Trevor L Kane | 40.4% | 2.04 | August 2026 |
| Mary A Crum | 16.8% | 2.83 | August 2026 |
| Kimberly C Breen | 11.4% | 2.80 | August 2026 |
| Alexander M Duryee | 17.1% | 2.35 | August 2026 |
| Deepa Mishra | 16.9% | 2.62 | August 2026 |
| Paul C Martin | 55.1% | 2.79 | August 2026 |
| Rachel Emily Martin | 23.1% | 2.00 | June 2026 |
| Jessica Edwards | 14.1% | 1.62 | August 2026 |
| John Paul Selwanes | 30.3% | 2.22 | June 2026 |
| Tiffany Maureen Gough | 28.2% | 2.59 | August 2026 |
| Sharon M Papciak | 0.0% | 2.59 | June 2026 |
| Liliana Cerullo | 0.0% | 1.00 | July 2026 |
Examiner distribution
- Median grant ratio
- 36.0%
- Middle 50% of grant ratios
- 18.4%–54.2%
- Median office actions / grant
- 2.36
- Middle 50% of office actions / grant
- 2.06–2.59
Active examiners with at least 20 applications.
Other associated examiners
Examiners without recent activity.
| Ralph Gitomer | 72.2% | 1.59 | January 2023 Appears inactive |
|---|---|---|---|
| Lisa J. Hobbs | 59.2% | 2.49 | January 2020 Appears inactive |
| Rosanne Kosson | 81.4% | 1.62 | October 2025 Appears inactive |
| David M. Naff | 55.8% | 1.96 | May 2014 Appears inactive |
| Kailash C. Srivastava | 65.3% | 1.82 | October 2018 Appears inactive |
| Herbert J. Lilling | 78.9% | 1.36 | August 2012 Appears inactive |
| Sandra Saucier | 59.7% | 1.69 | September 2014 Appears inactive |
| Heidi Reese | 80.3% | 1.59 | March 2022 Appears inactive |
| Anjali Ajit Hirani | 51.8% | 2.67 | March 2025 Appears inactive |
| Srikanth Patury | 52.8% | 2.75 | July 2022 Appears inactive |
| Stephen A Perkins | 37.6% | 3.66 | April 2020 Appears inactive |
| Bin Shen | 58.7% | 1.86 | August 2023 Appears inactive |
| Christopher Keller | 19.5% | 3.56 | May 2016 Appears inactive |
| Louise Humphreyhumphrey | 44.4% | 2.02 | October 2025 Appears inactive |
| Herbert J. Lilling | 21.1% | 1.50 | September 2014 Appears inactive |
| Amanda P. Wood | 60.0% | 1.00 | October 2008 Appears inactive |
| Larry Moore | 100.0% | 1.17 | July 2013 Appears inactive |
| Neil Mittal | 33.3% | 1.00 | June 2022 Appears inactive |
| Chunyuan Luo | 100.0% | 1.40 | January 2013 Appears inactive |
| Matthew Smardz | 25.0% | 1.00 | April 2020 Appears inactive |
| Melenie Mccormick | 0.0% | 2.08 | September 2025 Appears inactive |
| Wyatt A Henke | 0.0% | N/A | April 2024 Appears inactive |
| Shaun T Ranade | 100.0% | 1.00 | November 2019 Appears inactive |
Based on available public USPTO records; may be incomplete.