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Official data from INPI

SEM TITULO

ConcedidaInvention Patent

Application data

Number

PI8003827

Type

Invention Patent

Filing

06/19/1980

Publication

-

Progress at the INPI

  1. Filing06/19/80
  2. Publication
  3. Examination04/26/83
  4. Allowance03/13/84
  5. Grant08/28/84
  6. Expired09/12/95

The letters patent expired on 09/12/1995: 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: 08/28/1984. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Kurita Water Industries Ltd

JP

Sanyo Chemical Industries Ltd

JP

See this company's full portfolio

Inventors

F. K. (pessoa física)

J. Y. (pessoa física)

K. K. (pessoa física)

M. (pessoa física)

O. (pessoa física)

T. F. (pessoa física)

Y. I. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

08/28/1984

RPI 723

Notificação para pagamento de retribuição

#13.1

07/03/1984

RPI 715

Deferimento

#9.1

03/13/1984

RPI 699

Solicitação de exame técnico

#4.1

04/26/1983

RPI 653

Carta-patente expirada

#21.1

09/12/1995

RPI 1293

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