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Official data from INPI

SEM TITULO

ConcedidaInvention Patent

Application data

Number

PI8103618

Type

Invention Patent

Filing

06/08/1981

Publication

01/11/1983

Progress at the INPI

  1. Filing06/08/81
  2. Publication01/11/83
  3. Examination03/05/85
  4. Allowance02/17/87
  5. Grant08/25/87
  6. Expired10/08/96

The letters patent expired on 10/08/1996: 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: 08/25/1987. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Yanhar do Brasil S.A.

SP, BR

Inventors

C. C. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

08/25/1987

RPI 879

Deferimento

#9.1

02/17/1987

RPI 852

14.1

08/05/1986

RPI 824

Exigência - art. 36 da LPI

#6.1

10/08/1985

RPI 781

Solicitação de exame técnico

#4.1

03/05/1985

RPI 750

Publicação do pedido de patente

#3.1

01/11/1983

RPI 638

Carta-patente expirada

#21.1

10/08/1996

RPI 1349

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