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Official data from INPI

PROCESSO PARA PRODUCAO DE CORANTES FTALOCININICOS HIDROSSOLUVEIS

ConcedidaInvention Patent
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Application data

Number

PI7903463

Type

Invention Patent

Filing

06/02/1978

Publication

-
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Progress at the INPI

  1. Filing06/02/78
  2. Publication
  3. Examination12/15/81
  4. Allowance03/08/83
  5. Grant08/30/83
  6. Expired04/04/95

The letters patent expired on 04/04/1995: the term of protection has ended. The technology is in the public domain and may be freely used in Brazil.

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Latest action published by the INPI: 08/30/1983. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

HOECHST AG

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Inventors

S. H. (pessoa física)

Technical data

IPC Classification

C09B 47/24

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

08/30/1983

RPI 671

Notificação para pagamento de retribuição

#13.1

06/28/1983

RPI 662

Deferimento

#9.1

03/08/1983

RPI 646

6.2

06/22/1982

RPI 609

Solicitação de exame técnico

#4.1

12/15/1981

RPI 582

Carta-patente expirada

#21.1

04/04/1995

RPI 1270

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