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Official data from INPI

PROCESSO PARA NEUTRALIZAR UM CATALISADOR DE METAL ALCALINO EM UM ORGANOPOLISSILOXANO POLIMERIZADO COM CATALISADOR DE METAL ALCALINO OU PARA REDUZIR O TEOR DE METAL ALCALINO DE UM ORGANOPOLISSILOXANO NEUTRALIZADO E POLIMERIZADO COM CATALISADOR DE METAL ALCALINO

ConcedidaInvention Patent

Application data

Number

PI8402899

Type

Invention Patent

Filing

06/14/1984

Publication

05/21/1985

Progress at the INPI

  1. Filing06/14/84
  2. Publication05/21/85
  3. Examination02/17/87
  4. Allowance05/16/89
  5. Grant11/28/89
  6. Terminated09/12/95

The patent was granted on 11/28/1989 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: 11/28/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

D. C. (pessoa física)

US

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Inventors

D. K. (pessoa física)

US

M. M. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

504.635 · 06/15/1983

US

530.296 · 09/08/1983

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

11/28/1989

RPI 997

Notificação para pagamento de retribuição

#13.1

09/12/1989

RPI 986

Deferimento

#9.1

05/16/1989

RPI 969

Exigência - art. 36 da LPI

#6.1

06/14/1988

RPI 921

Solicitação de exame técnico

#4.1

02/17/1987

RPI 852

Publicação do pedido de patente

#3.1

05/21/1985

RPI 761

Pedido de patente depositado

#2.1

08/14/1984

RPI 721

Anuidade - prazo legal encerrado

#18.2

09/12/1995

RPI 1293

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