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Official data from INPI

PROCESSO PARA PREPARAÇÃO DE UMA PARTÍCULA DE LÁTEX ESTRUTURADA

Em AnáliseInvention Patent

Application data

Number

PI8503847

Type

Invention Patent

Filing

08/09/1985

Publication

03/24/1987

Progress at the INPI

  1. Filing08/09/85
  2. Publication03/24/87
  3. Examination02/21/89
  4. Allowance07/16/91
  5. Grant04/28/92
  6. Terminated05/28/96

The patent was granted on 04/28/1992 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: 02/21/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

The Dow Chemical Company

US

See this company's full portfolio

Inventors

E. W. (pessoa física)

US

F. B. (pessoa física)

US

R. J. (pessoa física)

US

Technical data

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Solicitação de exame técnico

#4.1

02/21/1989

RPI 957

Publicação do pedido de patente

#3.1

03/24/1987

RPI 857

Pedido de patente depositado

#2.1

10/22/1985

RPI 783

Anuidade - prazo legal encerrado

#18.2

05/28/1996

RPI 1330

Concessão da patente

#16.1

04/28/1992

RPI 1117

Notificação para pagamento de retribuição

#13.1

11/12/1991

RPI 1093

Deferimento

#9.1

07/16/1991

RPI 1076

Exigência - art. 36 da LPI

#6.1

01/29/1991

RPI 1052

Exigência - art. 36 da LPI

#6.1

07/31/1990

RPI 1026

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