Prosecution Insights
Last updated: October 25, 2026

Hengst SE

Technology area: Chemistry & Materials

4 pending office actions • 4 art units • 4 examiners • 0 of 4 (0%) have an AI response strategy ready • 5 patents granted in the last 365 days

Analysis

Hengst SE has 4 pending office actions in Chemistry & Materials. The matters are distributed among 4 distinct examiners and 4 distinct art units, indicating that the portfolio is being examined across separate prosecution channels rather than through a single recurring assignment.

EZELUOMBA, MIRIAM NCHEKWUBECHU is the busiest examiner, with 1 pending matter. Because the listed examiner and art-unit counts track the office-action count, portfolio management should account for distinct examiner interactions in each matter.

Written from this page's own data; every figure is computed from USPTO records and verified before publication.

Portfolio Summary

4
Total Pending OAs
3
Non-Final OAs
1
Final Rejections
0
Advisory / Quayle

Response Deadline Pressure

Based on the USPTO statutory response window for each pending office action. 1 of the docket's apps have a known mailing date; the rest are excluded from the tile counts.

0
Overdue
0
Due this week
0
Due this month
0
Due in next 60 days
1
Due later

Case Difficulty Mix

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.

3
Hard (75%)
1
Medium (25%)
0
Easy (0%)
0
Unknown (0%)

Rejection Statute Mix

BucketCases
§103 only1 (25%)
Multi-statute (no §101)3 (75%)

Industry Mix

How the docket's pending cases split across USPTO tech-center bands.

4
Life Sciences
100% of docket
0
Information Tech
0% of docket
0
Communications
0% of docket
0
Semiconductors
0% of docket
0
Mechanical / Eng
0% of docket
0
Business / Other
0% of docket

Time-on-OA Estimate

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.

40 h
Manual time on pending OAs
8 h
Time saved (low, 20%)
14 h
Time saved (mid, 35%)
0.3 wks
FTE-weeks freed (mid)

Top Examiners on this docket

ExaminerApps on this docketAllow rateInterview lift
EZELUOMBA, MIRIAM NCHEKWUBECHU 1 94.1% +0.0%
GONZALEZ RAMOS, MAYLA 1 54.8% +13.6%
MILLER-CRUZ, EKANDRA S. 1 66.1% +51.3%
HUANG, RYAN 1 53.1% +31.1%

Hard Cases (3)

Multi-statute / §101-driven matters, or cases in front of an examiner with an allow rate under 30%. The top 3 ordered by deadline are shown.

App #TitleExaminerDue in
18839947 METHOD FOR PRODUCING A FILTER ELEMENT EZELUOMBA, MIRIAM NCHEKWUBECHU —
18574345 RECOVERY SYSTEM AND METHOD FOR RECOVERING A RECIRCULATION FLOW EXITING A FUEL CELL GONZALEZ RAMOS, MAYLA —
18535596 MICROPLASTIC FILTER FOR A WASHING MACHINE MILLER-CRUZ, EKANDRA S. —

Interview Candidates (3)

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 3 ordered by deadline are shown.

App #TitleExaminerDue in
17312833 METHOD AND DEVICE FOR DETERMINING AT LEAST ONE OPERATING PARAMETER OF A FILTER OR A FILTER CARTRIDGE ARRANGED IN THE FILTER, AND FILTER CARTRIDGE HUANG, RYAN 79d
18574345 RECOVERY SYSTEM AND METHOD FOR RECOVERING A RECIRCULATION FLOW EXITING A FUEL CELL GONZALEZ RAMOS, MAYLA —
18535596 MICROPLASTIC FILTER FOR A WASHING MACHINE MILLER-CRUZ, EKANDRA S. —

Top Art Units

Art UnitApps
1776 1
1721 1
1773 1
1772 1

Pending Office Actions

App #TitleExaminerArt UnitStatutesStatusDue inAIFiled
18839947 METHOD FOR PRODUCING A FILTER ELEMENT EZELUOMBA, MIRIAM NCHEKWUBECHU 1776 §103§112 Non-Final OA — Pending Aug 20, 2024
18574345 RECOVERY SYSTEM AND METHOD FOR RECOVERING A RECIRCULATION FLOW EXITING A FUEL CELL GONZALEZ RAMOS, MAYLA 1721 §102§103§112 Non-Final OA — Pending Dec 27, 2023
18535596 MICROPLASTIC FILTER FOR A WASHING MACHINE MILLER-CRUZ, EKANDRA S. 1773 §102§103§112 Non-Final OA — Pending Dec 11, 2023
17312833 METHOD AND DEVICE FOR DETERMINING AT LEAST ONE OPERATING PARAMETER OF A FILTER OR A FILTER CARTRIDGE ARRANGED IN THE FILTER, AND FILTER CARTRIDGE HUANG, RYAN 1772 §103 Final Rejection 79d Pending Jun 10, 2021

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Frequently Asked Questions

How many pending USPTO office actions does Hengst SE have?

Hengst SE has 4 pending office actions as of October 2026, spread across 4 art units and 4 examiners.

Which USPTO examiner handles the most Hengst SE applications?

Miriam Nchekwubechu Ezeluomba has the most, with 1 of Hengst SE's pending office actions.

What technology area are Hengst SE's patent applications in?

Mostly Chemistry & Materials (USPTO Tech Center 1700), based on where its pending office actions are examined.

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