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Official data from INPI

PROCESSO PARA A ESTERIFICACAO DE PIROCATECOL POR MEIO DE CLORETO DE METALILA

ConcedidaInvention Patent

Application data

Number

PI7806906

Type

Invention Patent

Filing

10/20/1977

Publication

-

Progress at the INPI

  1. Filing10/20/77
  2. Publication
  3. Examination
  4. Allowance09/08/82
  5. Grant04/26/83
  6. Expired05/24/94

The letters patent expired on 05/24/1994: the term of protection has ended. The technology is in the public domain and may be freely used in Brazil.

Talk to a specialist

Latest action published by the INPI: 04/26/1983. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

PHILAGRO SA

See this company's full portfolio

Inventors

R. M. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

04/26/1983

RPI 653

Notificação para pagamento de retribuição

#13.1

01/11/1983

RPI 638

Deferimento

#9.1

09/08/1982

RPI 620

8.1

07/13/1982

RPI 612

6.2

11/10/1981

RPI 577

Carta-patente expirada

#21.1

05/24/1994

RPI 1225

18.8

10/16/1990

RPI 1037

Anuidade - prazo legal encerrado

#18.2

09/18/1990

RPI 1033

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