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Official data from INPI

PROCESSO PARA PREPARAR PARTÍCULAS DE POLÍMERO DE NÚCLEO-BAINHA CONTENDO VAZIOS

Em AnáliseInvention Patent

Application data

Number

PI8600076

Type

Invention Patent

Filing

01/09/1986

Publication

09/23/1986

Progress at the INPI

  1. Filing01/09/86
  2. Publication09/23/86
  3. Examination08/16/88
  4. Allowance04/30/91
  5. Grant11/26/91
  6. Expired07/22/08

The letters patent expired on 07/22/2008: 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: 08/16/1988. 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

A. K. (pessoa física)

US

R. B. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

690.913 · 01/11/1985

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Solicitação de exame técnico

#4.1

08/16/1988

RPI 930

Publicação do pedido de patente

#3.1

09/23/1986

RPI 831

Pedido de patente depositado

#2.1

04/15/1986

RPI 808

Carta-patente expirada

#21.1

Patente extinta em 09/01/2001

07/22/2008

RPI 1959

Concessão da patente

#16.1

11/26/1991

RPI 1095

Republicação - classificação IPC

#15.11

11/12/1991

RPI 1093

Notificação para pagamento de retribuição

#13.1

08/13/1991

RPI 1080

Deferimento

#9.1

04/30/1991

RPI 1065

Exigência - art. 36 da LPI

#6.1

10/23/1990

RPI 1038

6.2

01/02/1990

RPI 1000

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