Technology areas: Chemistry & Materials • Medical Devices & Mechanical Engineering
4 pending office actions • 2 art units • 3 examiners • 0 of 4 (0%) have an AI response strategy ready • 5 patents granted in the last 365 days
Chart Energy & Chemicals Inc. has 4 pending office actions in Medical Devices & Mechanical Engineering. The docket involves 3 distinct examiners across 2 distinct art units, combining a narrow art-unit footprint with some examiner variation.
KING, BRIAN M is the busiest examiner, with 2 pending matters. Half of the docket is therefore associated with one examiner, making targeted review of that examiner's treatment potentially useful. The other matters may require different response tactics, even within the same technology area. The data supports coordination of technical terminology, but it does not establish that the cases share claims or prior-art issues.
Based on the USPTO statutory response window for each pending office action. 2 of the docket's apps have a known mailing date; the rest are excluded from the tile counts.
Difficulty is derived from the rejection statutes on the most recent pending office action. §101-driven and multi-statute cases are graded Hard; §112-only and obviousness-type double-patenting cases are graded Easy; everything else is Medium. "Unknown" means we have not yet parsed a statute for that office action.
| Bucket | Cases |
|---|---|
| §103 only | 1 (25%) |
| Double-patenting + other | 1 (25%) |
| Multi-statute (no §101) | 2 (50%) |
How the docket's pending cases split across USPTO tech-center bands.
Manual office-action response work runs about 10 hours per case. The time-saved bands below show what IP Author's prosecution pipeline typically delivers — a conservative 20% on the low end, 35% in the middle, 50% on the high end.
| Examiner | Apps on this docket | Allow rate | Interview lift |
|---|---|---|---|
| KING, BRIAN M | 2 | 70.3% | +23.7% |
| BULLOCK, IN SUK C | 1 | 51.2% | +28.3% |
| PETTITT, JOHN F | 1 | 25.9% | +21.6% |
Multi-statute / §101-driven matters, or cases in front of an examiner with an allow rate under 30%. The top 2 ordered by deadline are shown.
| App # | Title | Examiner | Due in |
|---|---|---|---|
| 16385269 | Mixed Refrigerant Liquefaction System and Method with Pre-Cooling | PETTITT, JOHN F | 15d |
| 18810923 | Dehydration Separation Unit with Mixed Refrigerant Cooling | KING, BRIAN M | — |
Cases in front of an examiner whose interview lift is 10 percentage points or more — i.e. interviewed cases historically resolve more favorably than non-interviewed ones. The top 4 ordered by deadline are shown.
| App # | Title | Examiner | Due in |
|---|---|---|---|
| 16385269 | Mixed Refrigerant Liquefaction System and Method with Pre-Cooling | PETTITT, JOHN F | 15d |
| 18048947 | Gas Purification and Liquefication System and Method Using Liquid Nitrogen | BULLOCK, IN SUK C | 33d |
| 19191851 | Hydrogen Liquefaction System and Method | KING, BRIAN M | — |
| 18810923 | Dehydration Separation Unit with Mixed Refrigerant Cooling | KING, BRIAN M | — |
| Art Unit | Apps |
|---|---|
| 3763 | 3 |
| 1772 | 1 |
| App # | Title | Examiner | Art Unit | Statutes | Status | Due in | AI | Filed |
|---|---|---|---|---|---|---|---|---|
| 19191851 | Hydrogen Liquefaction System and Method | KING, BRIAN M | 3763 | §103§112DP | Non-Final OA | — | Pending | Apr 28, 2025 |
| 18810923 | Dehydration Separation Unit with Mixed Refrigerant Cooling | KING, BRIAN M | 3763 | §103§112Other | Non-Final OA | — | Pending | Aug 21, 2024 |
| 18048947 | Gas Purification and Liquefication System and Method Using Liquid Nitrogen | BULLOCK, IN SUK C | 1772 | §103 | Non-Final OA | 33d | Pending | Oct 24, 2022 |
| 16385269 | Mixed Refrigerant Liquefaction System and Method with Pre-Cooling | PETTITT, JOHN F | 3763 | §103§112 | Non-Final OA | 15d | Pending | Apr 16, 2019 |
IP Author helps IP teams respond to office actions faster with AI-generated responses, examiner analytics, and prosecution intelligence.
Start Free TrialChart Energy & Chemicals Inc. has 4 pending office actions as of October 2026, spread across 2 art units and 3 examiners.
Brian M King has the most, with 2 of Chart Energy & Chemicals Inc.'s pending office actions.
Mostly Medical Devices & Mechanical Engineering (USPTO Tech Center 3700), based on where its pending office actions are examined.
