EP0093541A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Antidandruff compositions
Assignee: Beecham Group PLC
•
Filing: 1983-04-20
•
Granted: —
•
Expires: 2003-04-20
Abstract
Abstract Zinc pyridine thione in particulate form wherein a major porportion of the particles each having a maximum diameter of 2µm, and a maximum volume of 3 x 10 -17 m 3 and a minimum surface area of 2m 2 ig and are in the form of hexagonal flat platelets or fragments thereof, is particularly efficacious in treating superficial disorders including dandruff and may be formulated in conventional presentations.
Inventors
- 👤 Walter Bryan Davis
- 👤 Edgar Fairhurst
- 👤 June Graham
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-31 18:51
CPC Classifications
C; C07; C07D; C07D213/00; C07D213/02; C07D213/89; A; A61; A61K; A61K8/00; A61K8/18; A61K8/30; A61K8/49; A61K8/4906; A61K8/4933; A61Q; A61Q17/00; A61Q17/005; A61Q5/00; A61Q5/006; A61Q5/02; A61K2800/00; A61K2800/40; A61K2800/41; A61K2800/412
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
74 words
A hair or skin-care composition comprising zinc pyridine thione in association with a conventional carrier, characterised in that a major proportion of the zinc pyridine thione is in the form of particles each having a maximum diameter of 2 µm, and a maximum volume of 3 x 10- 17 m 3 and a minimum surface area of 2 m 2 /g, and being substantially in the form of hexagonal flat platelets or fragments thereof.
Claim 2
Dependent Claim
74 words
A hair or skin-care composition comprising zinc pyridine thione in association with a conventional carrier, characterised in that a major proportion of the zinc pyridine thione is in the form of particles each having a maximum diameter of 2 µm, and a maximum volume of 3 x 10- 17 m 3 and a minimum surface area of 2 m 2 /g, and being substantially in the form of hexagonal flat platelets or fragments thereof.
Claim 3
Dependent Claim
28 words
A composition as claimed in claim 1 wherein at least 75% of the ZPT in the composition is in the form of particles as defined in claim 1.
Claim 4
Dependent Claim
24 words
A composition as claimed in claim 1 or claim 2 wherein the major proportion of ZPT particles have a maximum diameter of 1 pm.
Claim 5
Dependent Claim
31 words
A composition as claimed in any one of claims 1 to 3 wherein the major proportion of the ZPT particles have a maximum volume of 4 x 10-18 m 3 .
Claim 6
Dependent Claim
30 words
A composition as claimed in any one of claims 1 to 4 wherein the major proportion of the ZPT particles have a minimum surface area of 4 m 2 /g.
Claim 7
Dependent Claim
32 words
A composition as claimed in any one of claims 1 to 5 presented as a hair dressing, hair conditioner, shampoo, cream, ointment or lotion for treating facial, scalp and other superficial disorders.
Claim 8
Dependent Claim
31 words
A composition as claimed in claim 6 presented as a hair shampoo or conditioner and also comprising detergent selected from sodium lauryl ether sulphate, sodium n-lauroyl sarcosinate and ammonium alkyl sulphide.
Claim 9
Dependent Claim
26 words
A process for producing a composition as claimed in any one of claims 1 to 7 which process comprises admixing the ZPT particles with the carrier.
Claim 10
Dependent Claim
57 words
Zinc pyridine thione characterised in that it is in particulate form and a major proportion of the particles have a maximum diameter of 2pm and a maximum volume of 3 x 10- 17 m 3 and a minimum surface area of 2m 2 /g and are substantially in the form of hexagonal flat platelets or fragments thereof.
Claim 11
Dependent Claim
57 words
Zinc pyridine thione characterised in that it is in particulate form and a major proportion of the particles have a maximum diameter of 2pm and a maximum volume of 3 x 10- 17 m 3 and a minimum surface area of 2m 2 /g and are substantially in the form of hexagonal flat platelets or fragments thereof.
Claim 12
Dependent Claim
17 words
Zinc pyridine thione as claimed in claim 9 for use in treating the human or animal body.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.