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Official data from INPI

COMPOSTO E COPOLÍMERO

ConcedidaInvention Patent

Application data

Number

PI8204436

Type

Invention Patent

Filing

07/29/1982

Publication

07/19/1983

Progress at the INPI

  1. Filing07/29/82
  2. Publication07/19/83
  3. Examination07/16/85
  4. Allowance03/15/88
  5. Grant09/27/88
  6. Expired07/01/08

The letters patent expired on 07/01/2008: 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: 09/27/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

ROHM & HAAS [US]

See this company's full portfolio

Inventors

T. H. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

291,143 · 08/07/1981

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

09/27/1988

RPI 936

Notificação para pagamento de retribuição

#13.1

07/19/1988

RPI 926

Deferimento

#9.1

03/15/1988

RPI 908

Exigência - art. 36 da LPI

#6.1

03/11/1986

RPI 803

Solicitação de exame técnico

#4.1

07/16/1985

RPI 769

Publicação do pedido de patente

#3.1

07/19/1983

RPI 665

Pedido de patente depositado

#2.1

09/14/1982

RPI 621

Republicação - classificação IPC

#15.11

Procedimento automático de reclassificação. As classificações IPC anteriores eram: C07C 87/30; C08F 218/08; C08J 3/24; C08F 20/34; C08F 20/36; C08F 32/00; C08F 216/14; C08F 220/04; C08F 222/22; C08F 232/08; C08F 20/00; C08F 216/00; C08F 220/00; C08F 222/00; C08F 232/00.

03/27/2018

RPI 2464

Carta-patente expirada

#21.1

Patente extinta em 29/07/97

07/01/2008

RPI 1956

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