Listed by the USPTO as LEFF, ANGELA MARIE DITRAN
Tech Center 3600 • Art Units: 1765 3674 3676
This examiner grants 70% of resolved cases
LEFF, ANGELA MARIE DITRAN works in Tech Center 3600 and Art Unit 1765. The dataset contains 1046 resolved cases and shows a 69.7% allowance rate. The median time to allowance is 1048 days, indicating a substantial prosecution period for applicants managing matters in this assignment.
The interview lift is 13.2%, providing a measurable but moderate signal for interview planning. Saudi Arabian Oil, ChampionX, and Halliburton Energy Services are the leading listed companies. MCKEE, VOORHEES & SEASE, OBLON, and OLIFF are the leading listed firms. The applicant mix points to energy and industrial technology work.
| App # | Title | Status | Assignee |
|---|---|---|---|
| 19212276 | SPACER FLUIDS CONTAINING SWELLABLE ABRASIVE PARTICLES | Non-Final OA | Schlumberger Technology Corporation |
| 19025431 | RELATIVE PERMEABILITY MODIFIER FOR SUBTERRANEAN FORMATION | Non-Final OA | Halliburton Energy Services, Inc. |
| 18375251 | HYDRAULIC CEMENT FOR CARBON DIOXIDE ENVIRONMENTS | Final Rejection | Halliburton Energy Services, Inc. |
| 18635351 | RANGING DEVICE | Non-Final OA | CANON KABUSHIKI KAISHA |
| 18913278 | Laser Range Finder | Non-Final OA | Robert Bosch GmbH |
| 18657990 | METHOD FOR FASTENING ANCHORING ELEMENTS IN BOREHOLES | Non-Final OA | Hilti Aktiengesellschaft |
| 19345721 | EUTECTIC METAL ALLOY-CONTAINING CEMENT AND METHODS OF USE THEREOF | Non-Final OA | SAUDI ARABIAN OIL COMPANY |
| 19173675 | BLOWING AGENT INCORPORATED RESIN SYSTEMS FOR CONSOLIDATING SUBTERRANEAN OIL AND GAS BEARING FORMATIONS | Final Rejection | SAUDI ARABIAN OIL COMPANY |
| 18625698 | METHODS TO SELECT BRINE RECIPES FOR WATERFLOODING OPERATIONS | Non-Final OA | Saudi Arabian Oil Company |
| 18374160 | POLYPROPYLENE RESIN EXTRUDED FOAM PARTICLES | Non-Final OA | KANEKA CORPORATION |
| 19075283 | SCALE INHIBITION IN A WELLBORE | Non-Final OA | KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS |
| 19074580 | METHOD FOR TREATING A WELL BORE FOR DEHYDROSULFURIZATION | Non-Final OA | KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS |
| 18952453 | ULTRA-LEAN TIME-OF-FLIGHT HISTOGRAM PROCESSING | Non-Final OA | STMicroelectronics International N.V. |
| 18494957 | Activatable Polymer Composition Comprising At Least Two Carboxylic Acids as Blowing Agent | Final Rejection | Zephyros, Inc. |
| 19106482 | AQUEOUS NANOBUBBLE DISPERSION AND GAS SUPERSATURATION AT ELEVATED PRESSURES | Final Rejection | Board of Regents, The University of Texas System |
| 18283873 | DRY GRINDING OF CLAY MINERAL, GROUND CLAY MINERAL, AND ITS USE IN CONSTRUCTION MATERIALS | Final Rejection | SIKA TECHNOLOGY AG |
IP Author analyzes examiner patterns and generates tailored response strategies with the highest chance of allowance.
Build Your Strategy69.7% of resolved applications examined by Angela Marie Ditran Leff were allowed (1,046 resolved cases), compared with 52.6% across Art Unit 1765 over the last five years.
This examiner's interview lift is +13.2 percentage points: the difference in allowance rate between resolved applications that had an examiner interview and those that did not.
Applications allowed by Angela Marie Ditran Leff took 1,048 days on average from filing to allowance.
Angela Marie Ditran Leff examines applications in Art Unit 1765 in Tech Center 3600 (Transportation, E-Commerce & Mechanical Systems).
