Prosecution Insights
Last updated: October 25, 2026

Rhodia Operations

Technology area: Chemistry & Materials

12 pending office actions • 7 art units • 9 examiners • 0 of 12 (0%) have an AI response strategy ready • 5 patents granted in the last 365 days

Analysis

Rhodia Operations has 12 pending office actions in Chemistry & Materials. The matters span 9 examiners and 7 art units, producing a substantial prosecution workload with repeated examiner and technical assignments.

FUNG, CHING-YIU is the busiest examiner, with 3 pending matters. Counsel can prioritize consistency across that examiner’s matters while tracking the broader art-unit and examiner distribution.

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

Portfolio Summary

12
Total Pending OAs
3
Non-Final OAs
8
Final Rejections
1
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
1
Due this month
0
Due in next 60 days
0
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.

6
Hard (50%)
5
Medium (42%)
1
Easy (8%)
0
Unknown (0%)

Rejection Statute Mix

BucketCases
§103 only4 (33%)
Double-patenting only1 (8%)
Double-patenting + other1 (8%)
Multi-statute (no §101)6 (50%)

Industry Mix

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

12
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.

120 h
Manual time on pending OAs
24 h
Time saved (low, 20%)
42 h
Time saved (mid, 35%)
1.1 wks
FTE-weeks freed (mid)

Top Examiners on this docket

ExaminerApps on this docketAllow rateInterview lift
FUNG, CHING-YIU 3 32.6% +20.6%
ZHANG, KELING NMN 2 66.8% +17.6%
PATEL, SMITA S 1 70.3% +57.3%
WELLES, COLMAN THOMAS 1 26.9% +65.7%
RUMP, RICHARD M 1 74.4% +20.3%
HARRIS, BRITTANY SHARON 1 48.7% +35.4%
SWANSON, ANDREW L 1 66.5% +11.9%
KASSA, TIGABU 1 36.7% +27.9%
HAWKINS, AMANDA SALATA 1 15.4% +40.9%

Hard Cases (8)

Multi-statute / §101-driven matters, or cases in front of an examiner with an allow rate under 30%. The top 8 ordered by deadline are shown.

App #TitleExaminerDue in
18564413 AGROCHEMICAL COMPOSITION CONTAINING A PARTICULAR ACRYLATE COPOLYMER DISPERSANT WELLES, COLMAN THOMAS 27d
18723400 Precipitated Silica and Process for Its Manufacture PATEL, SMITA S —
18496469 PROCESS FOR THE PREPARATION OF SILICATE FROM A PLANT ASH COMPRISING CRYSTALLINE SILICA USING A SALT CONTAINING A MULTIVALENT ANION ZHANG, KELING NMN —
18550272 CERIUM OXIDE PARTICLES, MAKING PROCESS THEREOF AND USE THEREOF IN CHEMICAL MECHANICAL POLISHING RUMP, RICHARD M —
18248510 METAL SURFACE TREATMENT SWANSON, ANDREW L —
17928224 ALUMINIUM AND ZIRCONIUM-BASED MIXED OXIDE FUNG, CHING-YIU —
17781310 ALUMINA WITH A PARTICULAR PORE PROFILE FUNG, CHING-YIU —
17627152 NATURAL VANILLIN COMPOSITIONS HAWKINS, AMANDA SALATA —

Interview Candidates (12)

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 8 ordered by deadline are shown.

App #TitleExaminerDue in
18564413 AGROCHEMICAL COMPOSITION CONTAINING A PARTICULAR ACRYLATE COPOLYMER DISPERSANT WELLES, COLMAN THOMAS 27d
18723400 Precipitated Silica and Process for Its Manufacture PATEL, SMITA S —
18496646 PROCESS FOR PREPARING A SILICATE FROM A PLANT ASH COMPRISING CRISTOBALITE USING A SALT CONTAINING A SULFUR OXYANION ZHANG, KELING NMN —
18496469 PROCESS FOR THE PREPARATION OF SILICATE FROM A PLANT ASH COMPRISING CRYSTALLINE SILICA USING A SALT CONTAINING A MULTIVALENT ANION ZHANG, KELING NMN —
18550272 CERIUM OXIDE PARTICLES, MAKING PROCESS THEREOF AND USE THEREOF IN CHEMICAL MECHANICAL POLISHING RUMP, RICHARD M —
18264734 BIODEGRADABLE SOIL RELEASE POLYESTER POLYMER AND THE CLEANING COMPOSITION COMPRISING THE SAME HARRIS, BRITTANY SHARON —
18248510 METAL SURFACE TREATMENT SWANSON, ANDREW L —
17928224 ALUMINIUM AND ZIRCONIUM-BASED MIXED OXIDE FUNG, CHING-YIU —

Top Art Units

Art UnitApps
1732 6
1612 1
1759 1
1761 1
1745 1
1619 1
1793 1

Pending Office Actions

App #TitleExaminerArt UnitStatutesStatusDue inAIFiled
18723400 Precipitated Silica and Process for Its Manufacture PATEL, SMITA S 1732 §103§112 Non-Final OA — Pending Jun 21, 2024
18564413 AGROCHEMICAL COMPOSITION CONTAINING A PARTICULAR ACRYLATE COPOLYMER DISPERSANT WELLES, COLMAN THOMAS 1612 §103DP Final Rejection 27d Pending Nov 27, 2023
18496646 PROCESS FOR PREPARING A SILICATE FROM A PLANT ASH COMPRISING CRISTOBALITE USING A SALT CONTAINING A SULFUR OXYANION ZHANG, KELING NMN 1732 §103 Final Rejection — Pending Oct 27, 2023
18496469 PROCESS FOR THE PREPARATION OF SILICATE FROM A PLANT ASH COMPRISING CRYSTALLINE SILICA USING A SALT CONTAINING A MULTIVALENT ANION ZHANG, KELING NMN 1732 §103§112 Final Rejection — Pending Oct 27, 2023
18550272 CERIUM OXIDE PARTICLES, MAKING PROCESS THEREOF AND USE THEREOF IN CHEMICAL MECHANICAL POLISHING RUMP, RICHARD M 1759 §102§103Other Non-Final OA — Pending Sep 12, 2023
18264734 BIODEGRADABLE SOIL RELEASE POLYESTER POLYMER AND THE CLEANING COMPOSITION COMPRISING THE SAME HARRIS, BRITTANY SHARON 1761 §103 Final Rejection — Pending Aug 08, 2023
18248510 METAL SURFACE TREATMENT SWANSON, ANDREW L 1745 §103§112 Final Rejection — Pending Apr 10, 2023
17928224 ALUMINIUM AND ZIRCONIUM-BASED MIXED OXIDE FUNG, CHING-YIU 1732 §103§112Other Non-Final OA — Pending Nov 28, 2022
17946610 POLYELECTROLYTE-LAYER FORMING BLOCK COPOLYMERS AND COMPOSITIONS AND USES THEREOF KASSA, TIGABU 1619 DP Final Rejection — Pending Sep 16, 2022
17781310 ALUMINA WITH A PARTICULAR PORE PROFILE FUNG, CHING-YIU 1732 §103§112 Final Rejection — Pending May 31, 2022
17781282 ALUMINA WITH A PARTICULAR PORE PROFILE FUNG, CHING-YIU 1732 §103 Final Rejection — Pending May 31, 2022
17627152 NATURAL VANILLIN COMPOSITIONS HAWKINS, AMANDA SALATA 1793 §103 Non-Final OA — Pending Jan 14, 2022

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Frequently Asked Questions

How many pending USPTO office actions does Rhodia Operations have?

Rhodia Operations has 12 pending office actions as of October 2026, spread across 7 art units and 9 examiners.

Which USPTO examiner handles the most Rhodia Operations applications?

Ching-Yiu Fung has the most, with 3 of Rhodia Operations's pending office actions.

What technology area are Rhodia Operations's patent applications in?

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

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