Description
Class C07D : HETEROCYCLIC COMPOUNDS
Subclass 201/04: Preparation, separation, purification, or stabilisation of unsubstituted lactams Preparation of lactams from or via oximes by Beckmann rearrangement
C07D 201/04
Sub-Class
Stats
- 51 US PATENTS IN FORCE
- 3 US APPLICATIONS PENDING
- 22 Total Patent Owners
- 257 TOTAL INVENTORS
Recent Patents
| Patent # | Title | Filing Date | Issue Date | Patent Owner |
|---|---|---|---|---|
| 12060326 | Laurolactam preparation method and synthesis apparatus | Nov 11, 22 | Aug 13, 24 | HANWHA SOLUTIONS CORPORATION |
| 11535591 | Laurolactam preparation method and synthesis apparatus | Dec 18, 19 | Dec 27, 22 | DOOSAN ENERBILITY CO., LTD. |
| 11370752 | Process for preparing cyclododecanone | Jan 31, 18 | Jun 28, 22 | Evonik Operations GmbH |
| 10457636 | Production method of ϵ-caprolactam | Sep 07, 17 | Oct 29, 19 | Sumitomo Chemical Company Limited |
| 10448537 | Power supply device, photochemical reaction device and method in which same is used, and lactam production method | Jun 06, 16 | Oct 15, 19 | Toray Industries Inc. |
| 10414724 | Photochemical reaction device, photochemical reaction method using same, and lactam production method using said method | Sep 17, 15 | Sep 17, 19 | TORAY INDUSTRIES, INC. |
| 10093622 | Efficient process for the synthesis of cyclic amides | Jun 04, 15 | Oct 09, 18 | ANTHEA AROMATICS PRIVATE LIMITED |
| 9908785 | Process and apparatus for producing ammonium sulfate crystals | Jun 20, 14 | Mar 06, 18 | CAP III B.V. |
| 9844599 | Nitric oxide releasing produgs of therapeutic agents | Jan 17, 14 | Dec 19, 17 | Not available |
| 9708270 | Substituted spiropiperidinyl compounds useful as GPR120 agonists | Oct 11, 13 | Jul 18, 17 | MERCK SHARP & DOHME CORP. |
| 9662643 | Gas and liquid phase catalytic Beckmann rearrangement of oximes to produce lactams | Apr 28, 14 | May 30, 17 | ADVANSIX RESINS & CHEMICALS LLC, UNIVERSITY OF SOUTHAMPTON, |
| 9624176 | Method for preparing caprolactam by using a microreactor under lewis acid catalysis | Jun 24, 16 | Apr 18, 17 | NANJING TECH UNIVERSITY |
| 9533932 | Process for preparing cyclododecanone | Jul 31, 15 | Jan 03, 17 | EVONIK DEGUSSA GMBH |
| 9533933 | Process for preparing cyclododecanone | Jul 31, 15 | Jan 03, 17 | EVONIK DEGUSSA GMBH |
| 9533944 | Method for producing oxime | Dec 12, 13 | Jan 03, 17 | SUMITOMO CHEMICAL COMPANY, LIMITED |
| 9518024 | Method and system for preparing caprolactam | Jan 15, 16 | Dec 13, 16 | China Petrochemical Development Corporation |
| 9499481 | Method for preparing lactames, comprising a photonitrosation step, followed by a Beckmann transposition step | Apr 14, 14 | Nov 22, 16 | ARKEMA FRANCE |
| 9242931 | Method for producing amide compound | Dec 27, 13 | Jan 26, 16 | UBE INDUSTRIES, LTD. |
| 9221762 | Gas and liquid phase catalytic beckmann rearrangement of oximes to produce lactams | May 09, 14 | Dec 29, 15 | ADVANSIX RESINS & CHEMICALS LLC, UNIVERSITY OF SOUTHAMPTON, |
| 8962826 | Method for producing amide compound | Dec 27, 13 | Feb 24, 15 | UBE INDUSTRIES, LTD. |
Recent Publications
| Publication # | Title | Filing Date | Pub Date | Patent Owner |
|---|---|---|---|---|
| 2023/0020,512 | METHOD FOR PRODUCING LAUROLACTAM, DEVICE FOR SYNTHESIZING SAME, LAUROLACTAM COMPOSITION PRODUCED THEREBY, AND METHOD FOR PRODUCING POLYLAUROLACTAM USING SAME | Oct 27, 20 | Jan 19, 23 | Not available |
| 2022/0402,868 | PROCESS AND PLANT FOR THE PRODUCTION OF EPSILON-CAPROLACTAM AND AMMONIUM SULFATE ON INDUSTRIAL SCALE | Nov 05, 20 | Dec 22, 22 | Not available |
| 2017/0305,851 | PHOTOIRRADIATION DEVICE, PHOTOREACTION METHOD USING THE SAME, AND METHOD FOR PRODUCING LACTAM | Sep 17, 15 | Oct 26, 17 | TORAY INDUSTRIES, INC. |
Top Owners in This Subclass
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Patents Issued To Date - By Filing Year
Average Time to Issuance
- 30 Months (last 2 years Issuances)
- 30 Months (last 5 years Issuances)