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  1. Technology classes
  2. /A · Human necessities
  3. /A61 · Medical or veterinary science
  4. /A61K · Medicines and medical preparations
  5. /A61K 51/00 · Preparations containing radioactive substances for use in therapy or testing in vivo
  6. /A61K 51/02 · Preparations containing radioactive substances for use in therapy or testing in vivo
  7. /A61K 51/04 · Organic compounds
  8. /A61K 51/041 · Heterocyclic compounds
  9. /A61K 51/044 · Having nitrogen as a ring hetero atom
  10. /A61K 51/0444
A61K 51/0444

Having four-membered rings

Official title: {having four-membered rings, e.g. azetidine}

A61K51/0444 (Having four-membered rings) appears on 2 US grants and 5 published applications in this corpus.

Search patents in A61K

Where it sits

  1. AHuman necessities
  2. A61Medical or veterinary science
  3. A61KMedicines and medical preparations
  4. A61K 51/00Preparations containing radioactive substances for use in therapy or testing in vivo
  5. A61K 51/02Preparations containing radioactive substances for use in therapy or testing in vivo
  6. A61K 51/04Organic compounds
  7. A61K 51/041Heterocyclic compounds
  8. A61K 51/044Having nitrogen as a ring hetero atom
  9. A61K 51/0444Having four-membered rings
Granted patents
2
Published applications
5
Assignees
4
Inventors
25
Latest grant
28 May 2019

Filings by year

Granted patentsPublished applications
A61K 51/0444: granted patents and published applications per publication year
YearGranted patentsPublished applications
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200220122026

By publication year. 2026 runs to 8 Oct.

Recent patents

  • Azetidine derivatives for tau imaging28 May 2019US 10,301,308 B2Eli Lilly and Company
  • Labelled elastase inhibitors23 Apr 2002US 6,375,926 B1Amersham International plc
  • Radiolabeled amino acids for cancer imaging, therapy and corresponding labeling methods thereof11 Jun 2026US 2026/0158175 A1
  • Tetrapyrrolic conjugates and uses thereof for imaging23 Jun 2022US 2022/0194952 A1
  • Compositions of sphingosine-1-phosphate receptor 2 (s1pr2) binding agents and uses thereof26 Nov 2020US 2020/0369626 A1Washington University
  • Azetidine derivatives for tau imaging4 Oct 2018US 2018/0282322 A1Eli Lilly and Company
  • NPC1L1 (NPC3) and methods of use thereof8 Jul 2004US 2004/0132058 A1Schering Corporation

Most cited

By later US patents
  • Labelled elastase inhibitors14US 6,375,926 B1Amersham International plc · 2002

Top assignees

Documents
  • Eli Lilly and Company2
  • AIAmersham International plc1
  • SSchering Corporation1
  • Washington University1

Often classified with

  • C07DHeterocyclic compounds5
  • C07BGeneral methods of organic chemistry4
  • A61PTherapeutic uses of medicines3
  • C07CAcyclic or carbocyclic compounds2
  • A01KAnimal husbandry1
  • C07FAcyclic, carbocyclic or heterocyclic compounds containing elements other than carbon, hydrogen, halogen1
  • C07KPeptides1
  • C12NMicroorganisms or enzymes1
  • G01NInvestigating or analysing materials by determining their chemical or physical properties1

Documents that also carry the other class.

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