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Official data from INPI

DISPERSÃO DE SILICA REDISPERSIVEL, E, PROCESSO PARA SUA PREPARAÇÃO

Em AnáliseInvention Patent

Application data

Number

PI8600888

Type

Invention Patent

Filing

02/28/1986

Publication

11/11/1986

Progress at the INPI

  1. Filing02/28/86
  2. Publication11/11/86
  3. Examination12/30/86
  4. Allowance09/17/91
  5. Grant06/30/92
  6. Terminated09/26/95

The patent was granted on 06/30/1992 and later terminated for failure to pay the annuities. The technology is in the public domain in Brazil.

Talk to a specialist

Latest action published by the INPI: 12/30/1986. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Unilever N.V.

NL

See this company's full portfolio

Inventors

I. G. (pessoa física)

NL

J. R. (pessoa física)

GB

M. G. (pessoa física)

NL

Technical data

IPC Classification

Priority claims

GB

8505470 · 03/04/1985

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Solicitação de exame técnico

#4.1

12/30/1986

RPI 845

Publicação do pedido de patente

#3.1

11/11/1986

RPI 838

Pedido de patente depositado

#2.1

08/12/1986

RPI 825

Anuidade - prazo legal encerrado

#18.2

09/26/1995

RPI 1295

Concessão da patente

#16.1

06/30/1992

RPI 1126

Republicação - classificação IPC

#15.11

04/07/1992

RPI 1114

Notificação para pagamento de retribuição

#13.1

01/21/1992

RPI 1103

Deferimento

#9.1

09/17/1991

RPI 1085

Exigência - art. 36 da LPI

#6.1

01/22/1991

RPI 1051

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