 Posted: Mon Dec 27, 2021 1:45 pm Post subject: Re: Tamron Adaptall-2 lens patents? |
 |
|
eggplant wrote:
| 55 wrote: |
| eggplant wrote: |
. . .
So- any help or enlightment? |
No, just gratitude and curiosity about what you've shared.
Interesting information! Thank you.
Regarding patent searching, I've recently become interested in finding patents for early interchangeable lens systems - T mount, et al.
Beyond following the advanced search guidelines, do you have any advice about how best to search patent databases? |
I've had a few attempts at writing something decent here, it's hard to say.
For example, you could quite literally type "Vivitar" or "Tokina" into Google patents and you will find what I found.
Beyond that, I use two ways to 'dig back'- click on the inventor name to see if they made earlier things for a slightly differently named assignee (e.g. Tokina Optical vs Tokinaa Kogaku kk), or see if they cited an earlier patent of their own.
The unspoken issue there is language differences, particularly as a Westerner. You stack Google trying it's best with your unfamiliarity with Japanese, German, French etc and you can quickly hit brick walls!
From that, on multiple occasions you can end up with 'blank patents' - no title, no assignee, no inventor, no way of finding it on Google unless you know the exact number:
(Ignore that this has a citation and assignee, it's the best example I have to hand at the minute)
The solution, and where I'd imagine you'd find your T4 patent, is to go for country-specific patent websites rather than Google.
I haven't gone this deep yet, as I haven't found a need to, but will report back.
Also
REMEMBER: just because it doesn't have a download link on Google, doesn't mean anything. Just click (for example) the "Espacenet" link and it'll display:
 |
Search
Memberlist
Register
Profile
Log in to check your private messages
Log in
