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Official data from INPI

COMPOSIÇÃO ISENTA DE PIRIDINA PARA A DETERMINAÇÃO DE ÁGUA

ConcedidaInvention Patent

Application data

Number

PI8101581

Type

Invention Patent

Filing

03/18/1981

Publication

-

Progress at the INPI

  1. Filing03/18/81
  2. Publication
  3. Examination10/25/83
  4. Allowance12/13/88
  5. Grant08/29/89
  6. Expired09/24/96

The letters patent expired on 09/24/1996: 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: 08/29/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

M. H. (pessoa física)

DE

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Inventors

D. F. (pessoa física)

DE

K. K. (pessoa física)

DE

Technical data

IPC Classification

Priority claims

DE

P 30 10 436.0 · 03/19/1980

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

08/29/1989

RPI 984

Notificação para pagamento de retribuição

#13.1

04/25/1989

RPI 966

Deferimento

#9.1

12/13/1988

RPI 947

Exigência - art. 36 da LPI

#6.1

05/10/1988

RPI 916

Exigência - art. 36 da LPI

#6.1

12/08/1987

RPI 894

Exigência - art. 36 da LPI

#6.1

04/23/1985

RPI 757

Exigência - art. 36 da LPI

#6.1

06/12/1984

RPI 712

Solicitação de exame técnico

#4.1

10/25/1983

RPI 679

Carta-patente expirada

#21.1

09/24/1996

RPI 1347

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