Industrial Crystallization Process Control Patents: Filing Trends and Where Claims Concentrate
Filings peaked in 2017 at 87 records and fell -88% from 84 in 2021 to 10 in 2024, the last year the data can treat as complete. Filings peaked at 87 in 2017 and declined through the decade; the 2021-to-2024 span alone shows an -88% drop, from 84 records to 10. Because publication lags filing by roughly 18 months, 2025 and 2026 figures are still filling in and should not be read as a continued fall.
- 1CORDIS CORPORATION6.1%
- 2EXXONMOBIL CHEMICAL PATENTS INC3.8%
- 3COLDSNAP CORP3.6%
- 4GILEAD SCIENCES INC3.5%
- 5FUJIFILM CORP2.6%
See the full industrial crystallization process control analysis in Eureka
- The complete ranking, not just the top five
- Every IPC branch with its share of the corpus
- The most-cited records, and where claim space is still thin
Common questions
Who holds the most patents in industrial crystallization process control?
One assignee leads the ranked list with 98 records, well ahead of the fifth-place holder at 41. But that leader's share of the whole field is modest: the top 5 assignees combined account for only 19.7% of the 1,594 records in scope, and the top 10 combined reach 29.0%. That means no single company or small group controls the field outright — the remaining assignees, spread across a 100-company ranking, collectively hold the majority of filings.
Is patent filing in this field growing or shrinking?
Filing volume peaked in 2017 at 87 records and has since declined; between 2021 and 2024 alone, volume fell -88%, from 84 records to 10. However, 2024 is the last year the trend can be treated as complete, because publication typically lags filing by around 18 months. Readers should not conclude the field is dying from the 2025-2026 figures, since those years are still filling in as later publications arrive.
What patent classes cover crystallization process control?
The dataset spans eight IPC subclasses, with B01D (separation processes such as filtration) and C07C (acyclic and carbocyclic compounds) each appearing in 18.7% of the 1,594 records. A61K medicinal preparations follows at 14.0%, and B01J catalysis-related processes at 10.2%. Because a record can carry multiple IPC codes, these percentages overlap rather than sum to 100%, and they show that crystallization control claims sit as much in downstream chemical and pharmaceutical processing as in dedicated crystallizer equipment.
Disclaimer. This analysis is based on Patsnap Eureka data drawn from a limited snapshot of global patent records and is provided for general information and reference only. Patent data carries inherent limitations — recent filings are under-counted because of publication lag, counts may be on a record or family basis, classification and applicant-name data may contain errors or duplicates, and the underlying search query defines the scope shown — so the analysis may be incomplete or inaccurate and may not reflect the full technology landscape.
Nothing here is an exhaustive prior-art, novelty, freedom-to-operate or validity search, nor does it constitute legal, financial or professional advice, and it should not be relied upon as such. Verify independently and review with qualified patent and legal professionals before acting on it.
Method: Filing trend and technology composition. Derived from a Patsnap search on Industrial Crystallization Process Control covering 2015–2026, data cut-off 2026-07-31. Counts reflect published records only and shift as new filings publish. Every share divides by all records in scope. Data: Patsnap Eureka. See the full landscape report.