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Official data from INPI

PROCESSO PARA A FUSÃO DE MATERIAIS FORMADORES DE VIDRO

Arquivada/ExtintaInvention Patent

Application data

Number

PI9005441

Type

Invention Patent

Filing

10/26/1990

Publication

09/17/1991

Progress at the INPI

  1. Filing10/26/90
  2. Publication09/17/91
  3. Examination03/23/93
  4. Allowance04/14/98
  5. Grant11/24/98
  6. Expired05/21/13

The letters patent expired on 05/21/2013: 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: 05/21/2013. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Praxair Technology, Inc.

US

Union Carbide Industrial Gases Technology Corporation

US

See this company's full portfolio

Inventors

H. K. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

428.891 · 10/30/1989

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Carta-patente expirada

#21.1

Patente extinta em 26/10/2010

05/21/2013

RPI 2211

Concessão da patente

#16.1

11/24/1998

RPI 1455

Republicação - classificação IPC

#15.11

Alterada a Classificação Int.Cl.5 C03B 5/06, C03B 5/235 para Int.Cl.6 C03B 3/02 e C03B 5/235.

04/14/1998

RPI 1425

Deferimento

#9.1

04/14/1998

RPI 1425

Conhecimento de parecer técnico

#7.1

02/25/1997

RPI 1369

14.4

07/06/1993

RPI 1179

14.7

07/06/1993

RPI 1179

14.7

06/29/1993

RPI 1178

Solicitação de exame técnico

#4.1

03/23/1993

RPI 1164

Publicação do pedido de patente

#3.1

09/17/1991

RPI 1085

Pedido de patente depositado

#2.1

04/23/1991

RPI 1064

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