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Official data from INPI

MISTURA DE POLÍMEROS TENDO MELHORADAS PROPRIEDADES REOLÓGICAS EM FUSÃO E PROCESSO PARA MELHORAR AS PROPRIEDADES REOLÓGICAS RELACIONADAS COM A MOLDAGEM POR SOPRO DE UMA RESINA TERMOPLÁSTICA PARA ENGENHARIA

PublicadaInvention Patent

Application data

Number

PI8900363

Type

Invention Patent

Filing

01/27/1989

Publication

09/19/1989

Progress at the INPI

  1. Filing01/27/89
  2. Publication09/19/89
  3. Examination08/13/91
  4. Allowance04/30/96
  5. Grant03/25/97
  6. Expired12/15/09

The letters patent expired on 12/15/2009: 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: 09/19/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Rohm And Haas Company

US

See this company's full portfolio

Inventors

N. M. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

153,170 · 02/08/1988

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Publicação do pedido de patente

#3.1

09/19/1989

RPI 987

Pedido de patente depositado

#2.1

03/14/1989

RPI 960

Carta-patente expirada

#21.1

Patente extinta em 27/01/2004

12/15/2009

RPI 2032

Concessão da patente

#16.1

03/25/1997

RPI 1373

Republicação - classificação IPC

#15.11

02/25/1997

RPI 1369

Deferimento

#9.1

04/30/1996

RPI 1326

Exigência - art. 36 da LPI

#6.1

02/07/1995

RPI 1262

Solicitação de exame técnico

#4.1

08/13/1991

RPI 1080

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