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Official data from INPI

PROCESSO PARA PREPARAR UM TENSO-ATIVO E PROCESSO PARA PREPARAR UMA COMPOSIÇÃO

PublicadaInvention Patent

Application data

Number

PI8802318

Type

Invention Patent

Filing

05/12/1988

Publication

12/13/1988

Progress at the INPI

  1. Filing05/12/88
  2. Publication12/13/88
  3. Examination02/13/91
  4. Allowance08/08/95
  5. Grant04/30/96
  6. Expired09/02/08

The letters patent expired on 09/02/2008: 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: 12/13/1988. 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

C. C. (pessoa física)

US

D. S. (pessoa física)

US

P. M. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

049.490 · 05/14/1987

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Publicação do pedido de patente

#3.1

12/13/1988

RPI 947

Pedido de patente depositado

#2.1

10/04/1988

RPI 937

Carta-patente expirada

#21.1

Patente extinta em 12/05/2003

09/02/2008

RPI 1965

Concessão da patente

#16.1

04/30/1996

RPI 1326

Notificação para pagamento de retribuição

#13.1

01/02/1996

RPI 1309

Deferimento

#9.1

08/08/1995

RPI 1288

Exigência - art. 36 da LPI

#6.1

02/08/1994

RPI 1210

Solicitação de exame técnico

#4.1

02/13/1991

RPI 1054

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