One assignee leads the field with 28 of the 136 records in scope, well ahead of the rest of the ranked list, which covers 81 companies in total. The next four assignees combined bring the top 5 to 51 records, or 37.5% of all records in scope. Beyond the top 10, which together hold 47.8% of records, filing activity thins quickly into a long tail of companies and individual inventors holding just one or two patents each. This pattern suggests a small number of established players hold durable process IP while most other activity is localized or opportunistic.

The core classification, C11B (fatty oils and waxes production), covers all 136 records in scope, reflecting the search scope's focus on degumming, neutralization, bleaching and deodorization steps. Secondary classifications extend into edible oil formulation (A23D) and separation equipment (B01D), each covering 11.8% of records, and into microbial or enzymatic processing routes (C12N and C12P), each at 8.8%. Smaller pockets of activity touch fatty acid derivatives (C11C), medicinal preparations (A61K) and catalytic processes (B01J). Because a single record can carry multiple classifications, these shares add up to more than 100% of the record total.

China is by far the largest receiving office in this dataset, with 65 of the tracked filings, more than five times the next largest office. The European Patent Office follows with 13 filings and the United States with 12, while Australia, India and the WIPO/PCT route each carry 7. For companies assessing freedom-to-operate or planning where to file defensively, China should be the first jurisdiction reviewed given the concentration of activity there.

Filing activity accelerated sharply after 2017-2018, when annual filings were near zero, reaching a peak of 38 records in 2019. Activity dipped toward the 2022 midpoint but the underlying trend continued climbing afterward, indicating the field is still active rather than settled. The most recent year in the dataset will understate true activity, since patent publication typically lags filing by around 18 months, so 2025-2026 filings are not yet fully visible in the record.

US20130289009A1, assigned to Laboratoires Expanscience, claims a method for using a vegetable oil refining industry by-product to obtain a purified unsaponifiable fraction of vegetable oil, cleared of odorous and degraded compounds, along with compositions containing that purified product. It is narrowly scoped to unsaponifiable-fraction recovery from refining by-products rather than to refining process steps themselves such as degumming or deodorization. Work on core refining chemistry, equipment configurations, or contaminant mitigation methods like 3-MCPD reduction sits outside its claim scope, though anyone working specifically with unsaponifiable fractions recovered from refining waste streams should review its claims closely before designing a process around similar recovery methods.