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Official data from INPI

PROCESSO PARA A PREPARACAO DE SUSPENSOES AQUOSAS DE SILICATOS INSOLUVEIS,FINAMENTE DIVIDIDOS,CAPAZES DE PERMITIR CATIONS,SUSPENCOES,ASSIM PREPARADOS,E SUA APLICACAO

ConcedidaInvention Patent

Application data

Number

PI7700719

Type

Invention Patent

Filing

02/06/1976

Publication

-

Progress at the INPI

  1. Filing02/06/76
  2. Publication
  3. Examination
  4. Allowance09/30/86
  5. Grant06/30/87
  6. Expired09/21/93

The letters patent expired on 09/21/1993: 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: 06/30/1987. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

HENKEL & CIE GMBH

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Inventors

C. F. (pessoa física)

J. G. (pessoa física)

W. W. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

06/30/1987

RPI 871

Notificação para pagamento de retribuição

#13.1

03/04/1987

RPI 854

Deferimento

#9.1

09/30/1986

RPI 832

8.1

07/22/1986

RPI 822

Republicação - classificação IPC

#15.11

04/15/1986

RPI 808

Conhecimento de parecer técnico

#7.1

05/14/1985

RPI 760

15.0

03/23/1982

RPI 596

Exigência - art. 36 da LPI

#6.1

12/22/1981

RPI 583

Carta-patente expirada

#21.1

09/21/1993

RPI 1190

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